FAQ

1. Which TWINSTAR light is right for my aquarium?

Choose based on aquarium size, required light level, plant type, and how you plan to manage the aquarium.

S LINE is designed for high-demand planted aquariums that require very high light output and PPFD. It is recommended for demanding plants, dense layouts, medium to large aquariums, and users considering pendant installation.

E LINE is ideal for customers looking for strong performance at a practical price. It is especially well suited to small and medium planted aquariums and provides ample, well-balanced light for a wide range of aquatic plants.

B+ LINE is suitable for easy-to-grow plants, lower-light planted aquariums, tropical fish, and general ornamental fish setups. It provides more than enough performance for these applications.

2. What is the difference between S LINE, E LINE, and B+ LINE?

All three lines use the same TWINSTAR Six-Color Full Spectrum. The main differences are light output, body dimensions, and controller configuration.

S LINE is the performance line, offering the highest light output and PPFD.

E LINE provides a strong balance of performance and value, particularly for small and medium planted aquariums.

B+ LINE is designed for plants with lower light requirements and general ornamental fish aquariums.

3. Which line is best for high-light planted aquariums?

We recommend S LINE.

It is designed for demanding plants, dense layouts, deeper aquariums, and medium to large planted tanks. S LINE provides the highest light output and PPFD in the TWINSTAR Aquarium Lighting lineup.

4. Which line is best for small and medium planted aquariums?

We recommend E LINE.

It is particularly well suited to 20–45 cm planted aquariums and also provides ample light for a wide range of plants in medium-sized tanks. It is an excellent choice for customers who value strong performance at a practical price.

5. Which line is best for tropical fish and plants with lower light requirements?

We recommend B+ LINE.

It provides sufficient performance for easy-to-grow plants, plants with relatively low light requirements, tropical fish, and general ornamental fish aquariums. It can be used with or without CO₂ injection and uses the same TWINSTAR Six-Color Full Spectrum as S and E LINE.

When using S LINE or E LINE without CO₂ injection, we recommend reducing the light output according to the plant species and planting density.

6. How do I choose the correct light length?

We recommend choosing according to the aquarium width and the Recommended Tank Width listed for each model.

Select a model that provides adequate coverage across the aquarium. Recommended tank widths are listed in the product specifications.

7. Can I use two or more lights on one aquarium?

Yes.

Two or more lights can be used for larger or deeper aquariums, high-light planted setups, or when wider and more uniform coverage is required.

Using multiple lights can help provide more even illumination across wider aquariums.

1. What is the difference between G, G+, and G+ Pro?

All three lines use the same TWINSTAR Six-Color Full Spectrum, but they differ in light output, control functions, and mounting options.

G+ Pro provides the highest light output in the Waterproof lineup and offers the widest range of installation options.

G+ provides high light output and broad installation compatibility at a more practical price point.

G LINE is a practical full-spectrum lighting solution with flexible installation options, including T5 mounting, at an accessible price.

2. Which Waterproof model is compatible with my aquarium?

Compatibility depends on the aquarium brand, model, and cover structure.

TWINSTAR Waterproof Lighting offers multiple installation options for a wide range of closed aquarium systems, including compatible Juwel, Eheim, and Oase models.

We recommend checking the Compatibility / Installation information and your aquarium model before purchase.

3. Can G LINE be installed on aquariums without T5 fixtures?

Yes.

G LINE can be installed using existing T5 mounting systems, but alternative mounting options, including wire mounting, are also available for aquariums without T5 fixtures.

4. Can two Waterproof lights be used together?

Yes.

Two G or G+ units can be used when higher light output or wider coverage is required. For larger closed aquariums, using two units can provide stronger and more even illumination.

1. What is TWINSTAR Six-Color Full Spectrum?

TWINSTAR uses a combination of Red, Green, and Blue LEDs together with three types of Plant Growth LEDs.

This creates broader spectral coverage than conventional RGB lighting and is designed to support both healthy plant growth and natural color reproduction.

2. Why does spectrum matter?

Light output tells you how much light reaches the aquarium. Spectrum tells you what wavelengths that light contains.

Aquatic plants respond differently to different wavelengths, so two lights with similar brightness or PPFD can produce different results depending on their spectral balance.

3. What is the difference between PPFD and spectrum?

PPFD measures the amount of light plants receive within the photosynthetically active range, generally 400–700 nm.

Spectrum shows how that light is distributed across different wavelengths.

For planted aquariums, both light quantity and spectral balance are important.

1. Can I use the default spectrum without adjustment?

Yes.

TWINSTAR’s default spectrum is designed for healthy plant growth and natural color reproduction. Each light is color-balanced during production so that good results can be achieved without additional color adjustment.

2. Do I need to adjust the color channels manually?

No.

The default spectrum is recommended for most users. On models that support LightControl Pro, Red, Green, Blue, and Plant Growth channels can also be adjusted individually according to personal preference or aquarium conditions.

3. Is TWINSTAR Spectrum suitable for fish as well as plants?

Yes.

The Six-Color Full Spectrum is designed not only to support plant growth, but also to reproduce the natural colors of tropical and ornamental fish clearly and vividly.

1. Is TWINSTAR lighting suitable for red plants?

Yes.

TWINSTAR’s Six-Color Full Spectrum provides broad spectral coverage, including the red wavelength region. With sufficient light, CO₂, and nutrients, it supports healthy growth and strong color development in red aquatic plants.

2. Is high light output alone enough for healthy plant growth?

No.

Healthy plant growth depends on more than light output or PPFD. Spectrum balance, CO₂, nutrients, lighting duration, and overall aquarium conditions are also important.

Excessive light can contribute to algae or growth imbalance if other conditions are not properly matched.

3. Can I use TWINSTAR lighting without CO₂ injection?

Yes.

TWINSTAR lighting can be used with or without CO₂ injection.

In aquariums without CO₂ injection, we recommend reducing light output and adjusting the lighting duration according to the plant species and planting density.

1. How many hours per day should I use the light?

For most planted aquariums, around 8 hours per day is a good starting point.

Lighting duration can be adjusted according to plant species, CO₂ supply, nutrient levels, and the maturity of the aquarium.

2. When should I use Boost Mode?

Boost Mode can be used when additional light output is needed for a limited period.

Rather than operating at maximum output continuously, we recommend using Boost Mode only when necessary and adjusting it according to CO₂ and nutrient conditions.

3. What should I do if the light is too strong?

Reduce the light output gradually.

Monitor plant growth, algae development, CO₂ supply, and aquarium depth, then adjust the brightness to suit the conditions of your aquarium.

1. The light does not appear in the app. What should I do?

Make sure Bluetooth is enabled on your smartphone. Turn the light off and back on, then restart the app.

Keep the smartphone close to the light and check whether the light is already connected to another device.

2. A light that was previously connected no longer appears in the app.

Fully close and reopen the app, then restart the light.

If the problem continues, turn Bluetooth off and back on on your smartphone and try connecting again.

3. Only some of my lights are connecting.

Check that each light is powered on and try connecting to them individually.

If several lights are installed close together, checking them one at a time can make it easier to identify the connection issue.

1. The light does not turn on or off at the scheduled time.

Check the Timer settings in the app and make sure the current time on your smartphone is correct.

Also confirm that the Timer is enabled and review any Sunrise or Sunset settings that may affect the transition time.

2. The light seems to turn on or off earlier or later than the set time.

When Sunrise or Sunset is enabled, brightness changes gradually around the scheduled start or end time.

Because of this transition, the light may appear to turn on or off earlier or later than expected.

3. Will my Timer settings be lost if the power is disconnected?

Normally, saved Timer settings remain stored in the light.

After power is restored, the light should continue operating according to the saved schedule.

4. The Timer does not seem to be working correctly. What should I do?

Save the Timer settings again and monitor the light through a complete lighting cycle.

If the same issue continues, check the LightControl app version and your light model, then contact TWINSTAR Support with the relevant settings and details.

1. My brightness or color settings change by themselves.

Timer, Sunrise/Sunset, preset, or Group settings may override the current manual settings.

Check which schedules and color settings are currently active.

2. My color settings do not seem to be saved.

After adjusting the color channels, make sure the settings have been saved correctly.

If another preset or Timer setting becomes active, the displayed color may change according to that setting.

3. The light feels dim even when brightness is set to 100%.

On models that support Boost Mode, normal maximum output and Boost output are different.

Check whether Boost Mode is currently enabled.

1. Some lights in a Group do not operate together.

Make sure all lights in the Group are connected correctly.

Also confirm that the grouped lights use the same LightControl version.

2. The lights in my Group do not have the same brightness or color.

Group Control can synchronize functions such as ON/OFF and Timer operation, while some brightness and color settings may remain individually configured.

Check the settings of each light if needed.

1. I pressed the One-Touch button and the light stays on.

One-Touch Viewing temporarily turns the light on for a set period.

After the viewing period ends, the light should return to its normal schedule.

2. Can I use the light without the app?

Basic lighting operation is possible, but advanced functions such as Timer, Color Control, and Group Control require the LightControl app for setup and adjustment.

1. The light behaves differently after an app update.

App updates may include improvements or changes to lighting and Timer functions.

If you notice unexpected behavior after an update, fully close the app, restart the light, and check the settings again.

2. What information should I provide if the problem continues?

To help us identify the issue more quickly, please provide:

• Light model
• LightControl app version
• Smartphone model and OS version
• Approximate time when the problem occurred
• Screenshots of Timer or related settings
• Photos or video showing the issue, if possible

1. How do I choose the correct light size for my aquarium?

We recommend choosing based on your aquarium width and the Recommended Tank Width listed for each product.

Rather than simply matching the fixture length to the tank length, it is important to choose a model that provides appropriate coverage across the entire aquarium.

2. Can I install a TWINSTAR light on a rimmed aquarium?

Compatibility depends on the rim structure, glass thickness, and mounting system of the selected light.

Before purchase, check the installation dimensions and mounting specifications to make sure the light can be installed securely.

If you are unsure about compatibility, please contact us by email before purchasing.

3. Can I install a TWINSTAR light as a pendant?

Selected models can be installed using the TWINSTAR Pendant Kit.

Pendant installation allows you to adjust the mounting height and can help provide wider light coverage across the aquarium.

Before use, check Pendant Kit compatibility for the specific light model and size.

4. Can the Light Shade be used with all TWINSTAR lights?

The Light Shade is compatible only with current TWINSTAR lighting models.

It cannot be used with older B LINE and E LINE models.

Compatibility also varies by model and fixture length, so please check the accessory compatibility information before purchase.

If you are unsure, please contact us by email before purchasing.

5. Can I install two or more lights on one aquarium?

Yes.

Multiple lights can be used when higher light output or wider and more uniform coverage is required.

This is particularly useful for large, deep, or densely planted aquariums.

1. Which closed aquarium systems are compatible with TWINSTAR Waterproof Lighting?

Compatibility depends on the aquarium brand, model, cover structure, and mounting system.

TWINSTAR Waterproof Lighting is designed to support a wide range of closed aquarium systems, including compatible models from Juwel, Eheim, Oase, and other manufacturers.

Before purchase, we recommend checking the Installation and Compatibility information for your aquarium model.

If you are unsure about compatibility, please contact us by email before purchasing.

2. Can G LINE be installed on aquariums without T5 fixtures?

Yes.

G LINE can be installed using T5 mounting adapters, and alternative mounting options such as wire mounting can also be used on some aquarium systems without T5 fixtures.

3. Can G+ be installed on different types of closed aquariums?

Yes.

G+ is designed to support a wide range of closed aquarium systems.

The exact mounting method depends on the aquarium structure, so please check the installation dimensions and available mounting options before purchase.

4. Can G+ Pro be installed without replacing the aquarium cover?

Yes.

Integrated cover installation is only one of the available mounting options for G+ Pro.

Depending on the aquarium structure, it can also be installed using alternative mounting configurations, including wire mounting, without replacing the existing cover.

5. Can two Waterproof lights be installed together?

Yes.

Two G or G+ units can be used when higher light output or wider coverage is required. For larger closed aquariums, using two units can provide stronger and more even illumination.

6. Are TWINSTAR Waterproof lights fully waterproof?

TWINSTAR Waterproof Lighting is rated IP67.

It is designed for the humid and wet conditions commonly found around closed aquariums, but the product should always be installed and used according to the installation instructions.

1. Are mounting accessories included with the light?

Included accessories vary by model.

Please check the Specifications and Package Contents for each product to confirm which mounting components are included.

2. Can mounting parts from one TWINSTAR model be used with another model?

Not always.

Mounting components are designed according to the dimensions and structure of each product, so compatibility should always be confirmed before using accessories with another model.

If you are unsure, we recommend contacting us by email before purchasing.

3. Where can I find installation instructions?

Installation instructions are available in the product manual and in the Manuals & Downloads section of the TWINSTAR website.

For additional questions about a specific model, please refer to the product page or contact TWINSTAR Support.

1. The light does not turn on. What should I do?

First, check that the power adapter and cable are connected correctly.

If you are using a power strip or extension cable, we recommend testing the light by connecting it directly to another wall outlet.

Power adapters also have a limited service life. If the adapter is suspected to be faulty, it can be replaced with a compatible adapter that has the same output voltage, polarity, and connector specifications. The current rating should be equal to or higher than that of the original adapter.

Compatible standard adapters can be purchased from Amazon or other electronics retailers.

If the light still does not turn on after replacing the adapter, please contact TWINSTAR Support with the product model and a description of the issue.

2. The light is flickering or operating irregularly.

First, check the power connection and cable.

If persistent flickering or irregular operation occurs after long-term use, the power adapter may have reached the end of its service life and may need to be replaced.

Try using a compatible adapter with the same output voltage, polarity, and connector specifications.

If the problem continues after replacing the adapter, the light itself may need to be inspected. Please contact TWINSTAR Support.

3. Some LEDs do not light up or the color looks different.

First, check the Color settings and Preset settings in LightControl.

If the settings are correct but specific LEDs remain off or appear noticeably different in color, please contact TWINSTAR Support and include photos or video showing the issue.

1. Algae increased after I changed to a new light. What should I do?

If the new light has a higher output than your previous light, the existing balance of CO₂, nutrients, and lighting duration may no longer match the new light level.

We recommend starting with lower brightness and a shorter lighting period, then increasing them gradually while monitoring plant growth and algae development.

If the aquarium is still maturing or CO₂ supply is limited, we do not recommend starting with very high light output.

1. When should I contact TWINSTAR Support?

We recommend stopping use or contacting TWINSTAR Support for further inspection in the following cases:

• The light does not turn on after checking the power supply and adapter
• Flickering or irregular operation continues after replacing the adapter
• Some LEDs remain permanently off
• Unusual noise, odor, or excessive heat occurs
• Moisture or water is visible inside the product
• The cable, adapter, or connector is damaged

When contacting us, please include the product model, purchase date, description of the issue, and photos or video whenever possible.

1. How long is the warranty period for TWINSTAR products?

TWINSTAR lighting products are generally covered by a one-year warranty from the date of purchase.

Exact warranty conditions may vary depending on the product, country, and retailer, so please check your purchase receipt and the applicable local warranty policy.

2. What is covered under the warranty?

Manufacturing defects or functional problems that occur under normal use may be covered by the warranty.

After reviewing the product condition and the reported issue, we will advise the appropriate solution, which may include repair, replacement parts, or product replacement.

3. What is not covered under the warranty?

Warranty coverage may be limited in the following cases:

• Damage caused by incorrect installation or improper use
• Unauthorized disassembly, modification, or repair
• Damage caused by impact, dropping, or other external forces
• Use that does not follow the product instructions
• Water damage or electrical damage beyond the product’s specified protection
• Normal cosmetic changes or wear from use

Final warranty eligibility is determined after reviewing the condition of the product.

4. Do I need proof of purchase?

Yes.

A receipt or order record showing the purchase date and retailer may be required for warranty service.

Please provide proof of purchase when submitting a service request.

5. Who is responsible for shipping costs for warranty service?

Round-trip shipping costs are the responsibility of the customer.

This also applies when international shipping is required, so please contact TWINSTAR Support and confirm the service procedure before sending the product.

1. What should I do if there is a problem with my product?

First, check the Troubleshooting section of the FAQ.

If the problem continues, please contact TWINSTAR Support with the product model, purchase date, a description of the issue, and photos or video if possible.

We will review the information and provide the appropriate service procedure.

2. Can I receive an immediate replacement if I believe the product is defective?

The issue must first be reviewed.

We need to determine whether the problem is related to setup, installation, software, or the hardware itself before arranging the appropriate replacement or service.

For problems that occur shortly after purchase, please also check the return and exchange policy of the retailer where the product was purchased.

3. Can I disassemble or repair the product myself?

We do not recommend it.

Unauthorized disassembly or modification may cause product damage or safety issues and may limit warranty coverage.

Please contact TWINSTAR Support before attempting any repair.

1. Can I receive warranty service for a product purchased in another country?

Availability and service procedures may vary depending on the country and retailer where the product was purchased.

For products purchased through an authorized retailer or the TWINSTAR Official Store, we will review the purchase information and advise the available service options.

International shipping may be required for service.

2. Who pays the shipping costs for international warranty service?

Round-trip shipping costs are the responsibility of the customer.

Because international shipping costs can be significant, please contact TWINSTAR Support and confirm the service procedure before sending the product.

3. Who should I contact if I purchased the product from a local retailer?

We recommend contacting the authorized retailer or local distributor where you purchased the product first.

If they are unable to resolve the issue, please contact TWINSTAR Support with your purchase information and product details.

1. What information should I prepare before sending a product for service?

Please do not send the product without contacting TWINSTAR Support first.

To help us review the issue quickly, please provide:

• Product model
• Purchase date and retailer
• Order number or proof of purchase
• Description of the problem
• LightControl version, if applicable
• Photos or video showing the issue