Brightwell Ferroxiphos-G Granular Ferric Oxide for Phosphate Control
Directly and efficiently removes reactive phosphate from aquarium water. Removes silicate and phosphate-based organic material, resulting in improved water clarity.
Safe for use in all freshwater and marine aquaria, including planted and reef systems. Uniformly graded granular ferric oxide provides consistent phosphate control in both marine and freshwater environments.
| Specification | Value |
|---|---|
| Product Type | Granular Ferric Oxide |
| Volume | 16 oz |
| Application | Phosphate and silicate removal in aquariums |
| Compatibility | Freshwater, marine, planted, and reef systems |
| Brand | Brightwell Aquatics |
| Royal Item Number | ABAFOXG600 |
FAQ
Can Ferroxiphos-G be used in a planted aquarium?
Yes, it is safe for use in planted aquariums and helps reduce phosphate levels that can cause algae growth.
Does Ferroxiphos-G remove other minerals besides phosphate?
It primarily targets phosphate and silicate. It does not significantly affect other minerals in the water.
How often should Ferroxiphos-G be added to the aquarium?
Add according to water test results. Follow recommended dosage based on phosphate levels and tank volume.

Brandon James –
Used in my reef tank for three months. Water clarity improved noticeably. No algae blooms since adding Ferroxiphos-G. Works well with my existing filtration system.
Adrian Butler –
Good for reducing phosphate in a freshwater planted tank. Took a few weeks to see results, but the water became much clearer after consistent use.
Alexandra Cornish –
Perfect for a marine setup with high organic load. No adverse effects on corals or plants. Easy to dose and effective.
Bella Ogden –
Slight improvement in water clarity after two weeks. Works best when combined with regular water changes and testing.