1. Overview
The GloFish 3.5 Gallon Aquarium Kit is designed to provide a vibrant and easy-to-maintain environment for GloFish fluorescent fish. This kit includes essential components such as an eye-catching LED lighting system and a Tetra Whisper Filter, ensuring a clean and visually stunning aquatic display. It is suitable for both beginners and experienced hobbyists.

This image shows the GloFish 3.5 Gallon Aquarium Kit in its retail packaging, highlighting its key features and design.
2. Safety Information
- Always unplug all electrical components before performing maintenance or placing hands in the water.
- Ensure the aquarium is placed on a sturdy, level surface capable of supporting its full weight when filled with water.
- Keep electrical cords and connections dry. Use a drip loop for all power cords to prevent water from running along the cord and reaching the outlet.
- This product is for indoor use only.
- Do not allow children to operate or maintain the aquarium without adult supervision.
3. Package Contents
Your GloFish 3.5 Gallon Aquarium Kit includes the following components:
- GloFish LED lighting
- Tetra Whisper Filter
- Small Tetra Whisper BIO-Bag Filter Cartridge
- Plastic hood with feeding hole
- Samples of Tetra AquaSafe water conditioner
- GloFish Special Flake Food

This image displays the various components included in the kit: the aquarium with its hood, LED lighting, Tetra Whisper BIO-Bag Filter Cartridge, Tetra AquaSafe water conditioner, and GloFish Special Flake Food.
4. Setup Instructions
Follow these steps to set up your GloFish 3.5 Gallon Aquarium Kit:
- Choose a Location: Select a flat, sturdy surface away from direct sunlight, heat sources, and drafts. Ensure the location can support the weight of the filled aquarium (approximately 30 lbs).
- Rinse Components: Rinse the aquarium, gravel, and any decorations thoroughly with clean, cool water. Do not use soap or detergents.
- Add Gravel: Place a 1-2 inch layer of rinsed aquarium gravel at the bottom of the tank.
- Install Filter: Position the Tetra Whisper Filter inside the aquarium according to the instructions provided with the filter. Ensure the filter cartridge is properly inserted.
- Fill with Water: Carefully fill the aquarium with dechlorinated water. Use the included Tetra AquaSafe water conditioner as directed on its packaging to remove chlorine and chloramines.
- Install Hood and Lighting: Place the plastic hood onto the aquarium. Connect the GloFish LED lighting system and position it on the hood. Ensure all electrical connections are secure and dry.
- Cycling the Aquarium: Before adding fish, it is recommended to cycle your aquarium to establish beneficial bacteria. Consult a local pet store or online resources for proper aquarium cycling methods.

The back of the product box illustrates the various components of the aquarium kit and provides a visual guide to what is included.
5. Operating Instructions
5.1. Lighting System
The energy-efficient LED lighting system allows you to switch between two distinct modes:
- Sunlight Mode: Utilizes both white and blue LEDs to provide bright illumination, suitable for daytime viewing.
- Moonlight Mode: Activates only the blue LEDs, enhancing the fluorescence of GloFish décor and fish for a captivating nighttime effect.
Use the switch on the hood to toggle between these lighting modes.

This image shows the aquarium with its LED lighting system, illustrating the difference between the white light mode and the blue light mode, which enhances the fluorescence of GloFish products.
5.2. Filtration System
The Tetra Internal Filtration system provides an effective combination of mechanical and chemical filtration. It uses a small Tetra Whisper BIO-Bag Filter Cartridge to trap debris and waste, helping to maintain a clean and healthy aquatic environment for your fish.

This image highlights the internal filtration system within the aquarium, showing how it helps maintain a clean aquatic environment.
5.3. Feeding
Use the included GloFish Special Flake Food. Feed your fish small amounts once or twice a day, only what they can consume within a few minutes. Overfeeding can lead to poor water quality.
6. Maintenance
Regular maintenance is crucial for a healthy aquarium:
- Water Changes: Perform a 25% water change every 1-2 weeks. Use a gravel vacuum to remove debris from the substrate. Always add dechlorinator to new water.
- Filter Cartridge Replacement: Replace the Tetra Whisper BIO-Bag Filter Cartridge approximately every 2-4 weeks, or when water flow is noticeably reduced. Do not rinse the old cartridge in tap water as this kills beneficial bacteria.
- Aquarium Cleaning: Wipe down the inside glass with an aquarium-safe cleaner or magnet cleaner to remove algae. Clean the outside of the tank with a damp cloth.
- Hood and Light Cleaning: Periodically wipe the hood and light fixture to prevent dust and water spots from accumulating.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Cloudy Water | New tank syndrome, overfeeding, insufficient filtration, dirty filter. | Perform a partial water change. Reduce feeding. Check filter for proper operation and replace cartridge if dirty. Allow time for beneficial bacteria to establish. |
| Filter Not Working | Power outage, clogged impeller, dirty filter cartridge. | Check power connection. Unplug and clean the impeller. Replace filter cartridge. |
| Lights Not Turning On | Power connection issue, faulty LED unit. | Check power plug and connections. Ensure the switch is in the ON position. If issues persist, contact customer support. |
| Fish Sickness/Death | Poor water quality, improper cycling, stress, disease. | Test water parameters (ammonia, nitrite, nitrate). Perform water changes. Ensure proper tank cycling. Consult a veterinarian or aquatic specialist. |
8. Specifications
| Feature | Detail |
|---|---|
| Tank Volume | 3.5 Gallons |
| Item Weight | 3.45 pounds |
| Item Model Number | 046798786139 |
| Manufacturer | GloFish |
| Material | Plastic |
| Color | Fluorescent |
| Style | Modern |
| Specific Uses For Product | Indoor |
| First Available Date | November 1, 2023 |
9. Warranty and Support
For detailed warranty information, product registration, and customer support, please refer to the manufacturer's official website or contact GloFish customer service directly. Keep your proof of purchase for any warranty claims.
You can also visit the official GloFish store on Amazon for more products and information: