1. Introduction
The SEAOURA Aquarium Siphon Pump Gravel Cleaner SR-528 is a versatile 3-in-1 tool designed for efficient aquarium maintenance. It combines gravel washing, algae scraping, and water changing functions to help maintain a clean and healthy aquatic environment. This manual provides detailed instructions for assembly, operation, and maintenance to ensure optimal performance and longevity of your device.
Key Features:
- 3-in-1 Functionality: Gravel wash, scraping stain, and water changing.
- Manual Air Push Button: Initiates siphon action without mouth suction, ensuring hygiene and ease of use.
- Adjustable Length: Spliced extension tubes allow for four length combinations (15.74 inches, 17 inches, 33.5 inches, 35 inches) to suit various tank depths.
- Filter Basket Net: Protects fish and small gravel from being sucked out during cleaning.
- Flow Control Valve: Allows adjustment of water flow for precise cleaning.
- Duckbill Suction Head: Features a scraper for removing surface sediment and cleaning fine sand.
2. Package Contents
Please ensure all components listed below are present in your package:

Image: Diagram of all included parts for SEAOURA Aquarium Siphon Pump Gravel Cleaner SR-528.
- Siphon Pump Handle with Air Pressing Button
- Water Inlet Pipes (2 sections)
- Water Inlet Pipe Connector
- Duckbill Suction Head
- Soft Water Outlet Hose
- Pump Connect (Drainage Pipe Adapter)
- Flow Control Valve
- Hose Fixture Clamp
- Fixed Suction Cup
- User Manual
3. Setup Instructions
3.1 Assembling the Siphon Pump
Follow these steps to assemble your gravel cleaner:
- Connect the water inlet pipe(s) to the siphon pump handle. Use one or two pipes depending on your aquarium's depth. Secure with the water inlet pipe connector if using multiple sections.
- Attach the duckbill suction head to the end of the water inlet pipe if you intend to clean fine sand or scrape algae.
- Connect the soft water outlet hose to the outlet port on the siphon pump handle.
- Attach the pump connect (drainage pipe adapter) to the end of the soft water outlet hose.
- Install the flow control valve onto the soft water outlet hose to regulate water flow.
- Use the hose fixture clamp to secure the outlet hose to your collection bucket, preventing accidental spills.
- Attach the fixed suction cup to the siphon pump handle and secure it to the aquarium glass for hands-free operation.

Image: Step-by-step assembly guide for the SEAOURA Aquarium Siphon Pump.
Video: This video demonstrates the installation process of the siphon pump gravel cleaner.
3.2 Adjusting for Tank Size
The modular design allows you to customize the length of the siphon to fit various aquarium sizes:
- For smaller tanks (e.g., 10-gallon), use one water inlet pipe for a length of approximately 15.74 inches (excluding handle).
- For larger tanks, connect two water inlet pipes for a total length of approximately 33.5 inches (excluding handle).

Image: The siphon pump can be configured with one or two extension pipes to suit different aquarium sizes.
4. Operating Instructions
4.1 Starting the Siphon
To initiate the water flow:
- Ensure the outlet hose is placed in a bucket or drainage container positioned lower than the aquarium water level.
- Submerge the water inlet pipe and suction head into the aquarium.
- Repeatedly press the manual air push button on the handle until water begins to flow consistently through the outlet hose.
Video: This video demonstrates how to start the siphon action using the air push button.
Video: A detailed demonstration of the siphon's easy operation for water changes and cleaning.
4.2 Gravel Cleaning
To clean the aquarium gravel:
- Once the siphon is active, gently push the suction head into the gravel. The water flow will lift debris and waste while allowing the heavier gravel to fall back down.
- Move the suction head slowly across the gravel bed to clean different areas.
- If using the duckbill suction head, gently rake through fine sand to dislodge trapped debris.

Image: The siphon pump effectively cleans gravel by lifting debris while retaining the substrate.
Video: This video illustrates the gravel cleaning function of the siphon pump.
4.3 Water Changing
To perform a water change:
- Follow the steps to start the siphon (Section 4.1).
- Allow water to drain into your collection bucket until the desired amount of water has been removed from the aquarium.
- Once the water change is complete, remove the siphon from the aquarium.

Image: Proper setup for using the siphon pump to perform a water change.
4.4 Special Considerations
- Preventing Gravel Suction: Normally, you only need to put the gravel in the tube and move it around to clean. If your inlet pipe accidentally sucks in too much gravel, adjust the inlet pipe to a vertical position; the gravel will slowly flow out without blocking the pipe.
- Duckbill Suction Head: This head is designed for fine sand only, not coarse gravel or marble, to prevent clogging.

Image: Guidance on adjusting the siphon pipe to release excess gravel and prevent blockages.

Image: The duckbill suction head is specifically designed for cleaning fine sand.
5. Maintenance
5.1 Cleaning and Storage
Regular cleaning and proper storage will extend the life of your siphon pump:
- After each use, rinse all components thoroughly with clean water to remove any debris or residue.
- Pay special attention to the filter basket net and the air push button mechanism to ensure they are free from clogs.
- For storage, remove the soft water outlet hose and roll it neatly. Do not remove or fold the main siphon handle.
- Store the cleaner in a dry, cool place away from direct sunlight.

Image: Instructions for proper storage of the siphon pump hose to prevent damage.
6. Troubleshooting
6.1 Siphon Pump Not Drawing Water
If the siphon pump is not drawing water effectively after being used several times, it may be due to a clogged check valve in the hose.
- Solution: First, adjust the water flow to the maximum setting using the flow control valve. Then, place the siphon pump into the fish tank and shake it up and down quickly. This action helps to dislodge accumulated dirt from the check valve, allowing water to enter the inlet pipe and restart the siphon.
Video: This video provides a solution for when the aquarium siphon pump is not drawing water.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | SR-528 |
| Brand | SEAOURA |
| Item Weight | 1.08 Pounds |
| Product Dimensions | 7.16 x 1.77 x 16.41 inches |
| Included Components | Aquarium Gravel Cleaner (full kit) |
| Specific Uses | Indoor Aquarium Cleaning |
8. Warranty and Support
For any issues encountered during use, please feel free to contact us. We are committed to providing innovative and reliable products for aquarium enthusiasts and professional fishkeepers.
Please ensure that all parts are installed in the correct order for proper functionality. Due to variations in individual pressure and fish tank size/depth, water flow may vary.
For further assistance or warranty claims, please refer to the contact information provided with your purchase or visit the official SEAOURA website.