Blue Circle Nitrate Reduction Filter Pad (30×30×2cm)
The Blue Circle Nitrate Reduction Filter Pad (30×30×2cm) is a high-performance filter media designed to help naturally lower nitrate levels in your aquarium. Ideal for freshwater, marine, tropical, planted and high-bioload setups, this pad provides efficient mechanical filtration while supporting beneficial bacteria that break down excess nutrients.
Its high-density fibrous structure traps fine particles, detritus and waste before they break down into nitrate. This helps keep your water clearer for longer and reduces the frequency of large water changes.
Cut it to size for sumps, canisters, internal filters, hang-on-backs, pond filters and more.
Key Features
- High-density fibrous structure for effective particle trapping
- Supports beneficial bacteria to reduce nutrient buildup
- Reduces nitrate levels naturally without chemical additives
- Compatible with various filter types including internal, hang-on-back, and sump systems
- Easy to cut to fit specific filter dimensions
| Dimensions | 30x30x2cm |
|---|---|
| Material | Fibrous polymer |
| Use | Nitrate reduction, mechanical filtration |
FAQ
Can this filter pad be used in a marine aquarium?
Yes, the Blue Circle Nitrate Reduction Filter Pad is suitable for marine aquariums due to its compatibility with high-bioload and tropical setups.
How should I cut the filter pad to fit my filter?
Use a sharp pair of scissors or a utility knife to cut the pad to your desired size. Ensure the edges are clean and straight for optimal performance.
Does this pad require any special maintenance?
Please contact customer service

Alexander Manning –
I’ve used this pad in my 120-liter freshwater tank for three months. Water clarity has improved noticeably, and I’ve reduced my water changes from every two weeks to every four. The pad fits well in my hang-on-back filter and doesn’t clog easily.
Warren Dickens –
Good for reducing nitrate levels. I cut it to fit my sump and noticed a steady drop in nitrate over time. Works well with my planted tank and doesn’t interfere with water flow.
Ava Hodges –
Excellent product. After installing it in my marine tank, nitrate readings dropped from 120 ppm to under 40 ppm in two months. The pad stays clean and performs consistently.