PhosNet™
- Rapidly removes phosphate & silicate
- Synthetic granular ferric oxide (GFO)
- Less dust and thus is easier to use than most competing GFO products
Overview
PhosNet™ is a granular ferric oxide (GFO) with high porosity, high surface area and high binding capacity. It will rapidly remove phosphates and silicates from both freshwater and saltwater and will not release them back into your aquarium. It exhibits stronger binding than most competing products and consequently can reduce phosphates and silicates to very low levels. PhosNet™ also offers less dust and thus is easier to use than most competing GFO products.
| Specification | Value |
|---|---|
| Form | Granular ferric oxide (GFO) |
| Weight | 2kg |
| Removes | Phosphates and silicates |
| Binding Capacity | High |
FAQ
How does PhosNet™ remove phosphates and silicates from the aquarium?
PhosNet™ uses synthetic granular ferric oxide (GFO) with high porosity and surface area to bind phosphates and silicates. Once bound, these substances are retained in the GFO and do not return to the water.
Is PhosNet™ safe for both freshwater and saltwater aquariums?
Yes, PhosNet™ is effective in both freshwater and saltwater environments and does not release bound phosphates or silicates back into the water.
Does PhosNet™ produce dust during use?
PhosNet™ produces less dust compared to most other GFO products, making it easier and safer to handle.

Irene Stewart –
I’ve used PhosNet™ for several months in my freshwater tank. The phosphate levels dropped significantly after just one week. The product is easy to add and doesn’t create much dust. I noticed no negative effects on my fish or plants.
Christopher Mills –
Great product for controlling phosphate buildup. It works faster than other GFOs I’ve tried. The 2kg size is sufficient for a medium-sized tank. Very easy to mix and add into the filter media.
Olivia Churchill –
Works well in reducing silicate and phosphate levels. A bit more expensive than some alternatives, but the performance and low dust make it worth it. My tank has stayed stable without algae issues.