Introduction
The COOSPIDER JUP-03 Aquarium Filter is a multifunctional internal filter designed for 75 to 200-gallon tanks. It integrates a 22W 300GPH water pump, a 7W 254nm U-V light, and a replaceable filter sponge to provide comprehensive water purification. Its functions include physical and biological filtration, green water clarification, oxygen supply, deodorization, wave generation, and water circulation.

Image: Before and after using the COOSPIDER JUP-03 filter, demonstrating its effectiveness in clarifying green water.
Setup Instructions
- Unpack Components: Carefully remove all parts from the packaging. Verify that the filter unit, pump, U-V light, filter sponge, air hose, and power cords are present.
- Assemble Filter: Ensure the filter sponge and U-V light are correctly seated within the main filter body. The U-V light is typically pre-installed.
- Position in Tank: Immerse the filter unit completely in the aquarium water. For shallow turtle tanks, the filter can be placed horizontally. The unit is designed for full submersion.
- Connect Air Hose (Optional): If oxygen supply is desired, connect the provided air hose to the designated inlet on the pump head. Position the other end of the air hose above the water surface.
- Connect Power: Plug the power cords for both the water pump and the U-V lamp into appropriate electrical outlets. The unit features independent switches for the pump and U-V light.

Image: Overview of filter dimensions and separate power switches for pump and UV light.
Video: Demonstration of placing the submersible filter in an aquarium and connecting its components.
Operating Instructions
The COOSPIDER JUP-03 filter offers multiple functions for maintaining a healthy aquatic environment:
- Water Circulation: The 22W pump ensures continuous water movement, promoting even temperature distribution and preventing stagnant areas.
- Physical Filtration: The biochemical sponge filter traps uneaten food, waste, decaying plants, and other detritus, improving water clarity.
- U-V Sterilization: The 7W 254nm U-V light targets green algae, viruses, and harmful bacteria, contributing to crystal clear and healthy water. It is recommended to operate the U-V light for 1 to 2 hours daily; continuous 24-hour operation is not necessary. A visible indicator allows you to confirm the U-V light is active without disassembling the unit.
- Oxygen Supply: When the air hose is connected, the filter provides aeration, increasing dissolved oxygen levels vital for fish and aquatic life.
- Deodorization: By removing organic waste and controlling bacterial growth, the filter helps reduce unpleasant odors in the tank.
- Wave Generation: The dual outlets can be adjusted to create gentle water movement, simulating natural currents and enhancing the aquatic environment.

Image: Visual representation of the filter's wave-making, UV light indicator, air supply, and water pumping capabilities.
Video: Overview of the COOSPIDER UV Aquarium Filter in operation, highlighting its features for clear water.
Maintenance
Regular maintenance is crucial for the optimal performance and longevity of your COOSPIDER JUP-03 filter.
- Filter Sponge Cleaning: The biochemical filter sponge should be cleaned at least once a week, or more frequently depending on tank bioload. Disassemble the filter unit, remove the sponge, and rinse it thoroughly with old aquarium water (not tap water) to preserve beneficial bacteria. The sponge can be reused after cleaning.
- U-V Light Maintenance: The U-V lamp and its quartz sleeve should be cleaned periodically to ensure maximum effectiveness. Gently wipe the quartz sleeve to remove any buildup. Replace the U-V lamp annually or as needed, as its effectiveness diminishes over time.
- Pump Impeller Cleaning: Periodically check the pump impeller for debris or blockages that could reduce flow or cause noise. Clean as necessary.

Image: The filter sponge, a key component for physical filtration.
Troubleshooting
- Cloudy or Green Water Persists: While the filter is highly effective, it may take 3-7 days to achieve crystal clear water, especially in tanks with significant algae blooms. Ensure the U-V light is operating for 1-2 hours daily. Check if the filter sponge is clogged and requires cleaning.
- Reduced Water Flow: Check for blockages in the pump intake, impeller, or filter outlets. Clean the filter sponge. Ensure the pump is fully submerged and receiving power.
- Air Hose Not Functioning / Only Shoots Water: Verify that the air hose is securely connected and not kinked. Ensure the air intake is above the water surface and clear of obstructions.
- Damper or Spout Issues: If a damper or stopper for a spout does not stay in place, ensure it is correctly seated and not damaged. Contact support if the component is faulty.
- Unusual Noise: Disconnect power and check the pump impeller for any foreign objects or wear. Ensure the filter is securely mounted and not vibrating against the tank.
Specifications
| Feature | Detail |
|---|---|
| Model Name | JUP-03 |
| Water Pump Power | 22W |
| Flow Rate | 300 GPH (Gallons Per Hour) |
| U-V Light Power | 7W |
| U-V Wavelength | 254nm |
| Recommended Tank Size | 75-200 Gallons |
| Item Dimensions (LxWxH) | 2.9 x 2.5 x 12.5 inches |
| Item Weight | 2.07 pounds |
| Included Components | Filter unit, pump, U-V light, filter sponge |
Warranty Information
The COOSPIDER JUP-03 Aquarium Filter comes with a 1 Year Warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. Please retain your proof of purchase for warranty claims.
Customer Support
For any inquiries, missing parts, damage, or operational issues with your COOSPIDER JUP-03 Aquarium Filter, please contact our customer service team. We are committed to providing prompt assistance and will respond within 24 hours to help with replacements, reissues, or troubleshooting.
You can typically find contact information on the product packaging or through the retailer where the product was purchased.