Replacement Filter Pads for SUNSUN 304AB 404AB 704AB – 2-Pack
Replacement Filter Pads for SUNSUN 304AB 404AB 704AB – 2-Pack
Keep Your Aquarium Crystal Clear with Replacement Filter Pads
Maintain a clean, healthy aquatic environment with these Blue & White Aquarium Filter Pads, designed as direct replacements for SUNSUN GRECH 304AB, 404AB, and 704AB external canister filters. This 2-pack ensures you always have a fresh pad ready so your filtration system keeps running at peak performance.
Why These Filter Pads?
- Precision Fit: Engineered specifically for SUNSUN GRECH 304AB / 404AB / 704AB external filters — no trimming or guesswork required.
- Dual-Layer Blue & White Media: The blue coarse layer captures large debris and particles, while the white fine layer polishes water for exceptional clarity.
- Mechanical Filtration: Traps fish waste, uneaten food, and suspended solids before they break down and cloud your water.
- 2-Pack Value: Includes two pads so you can rotate replacements and keep your filter running without interruption.
- 100% New & Quality Assured: Each pad is brand new and ready to use straight out of the packaging.
- Available in 3 Color/Size Options: Choose the configuration that best suits your filter setup.
Compatible Filter Models
- SUNSUN / GRECH 304AB
- SUNSUN / GRECH 404AB
- SUNSUN / GRECH 704AB
How to Use
- Switch off and disconnect your external canister filter.
- Open the filter housing and remove the old, worn filter pad.
- Rinse the new pad briefly with aquarium water to remove any loose fibres.
- Insert the new pad into the correct tray — blue (coarse) side first, white (fine) side facing outward.
- Reassemble the filter, reconnect, and restart.
Maintenance Tip
For best results, rinse your filter pads in removed aquarium water (not tap water) every 2–4 weeks to preserve beneficial bacteria colonies. Replace pads entirely when they no longer rinse clean or show signs of deterioration.
For more guidance on maintaining a healthy aquarium, visit the U.S. Fish & Wildlife Service – Aquatic Health Resources.
Frequently Asked Questions
Q: Which aquarium filter models are these replacement pads compatible with?
A: These blue and white filter pads are designed as a direct replacement for SUNSUN GRECH 304AB, 404AB, and 704AB external canister filters. They are precision-cut to fit these models without any trimming required.
Q: What do the blue and white layers in the aquarium filter pad do?
A: The blue coarse layer acts as a pre-filter, trapping larger debris such as fish waste and uneaten food. The white fine layer provides polishing filtration, capturing finer particles to deliver clear, clean aquarium water.
Q: How often should I replace aquarium filter pads?
A: It depends on your tank's bio-load, but most hobbyists rinse their filter pads every 2–4 weeks and replace them entirely every 4–8 weeks, or sooner if the pad is visibly damaged or restricts water flow. Keeping a spare set on hand — like this 2-pack — ensures you're never caught without a fresh replacement.
Q: Does this listing include 2 pads or just 1?
A: This listing includes a 2-pack of blue and white filter pads, giving you a backup so you can swap immediately without waiting for a new order.