Brightwell Phosphat-E Liquid Phosphate Remover 8.5 oz. (250 ml)
Removes excess phosphate from marine aquarium water, helping to maintain optimal water conditions for sensitive invertebrates and fish. Effective against zooplankton ranging from 500 to 1,000 micrometers (1 mm) in size. Ideal for stony corals, clams, tube worms, larval crustaceans, juvenile fish, and adult planktivorous and microinvertebrate-predatory fish.
Contains a proprietary amino acid blend to support healthy coloration in invertebrates and fish. Formulated by a marine scientist with proven efficacy in marine environments. Does not require refrigeration.
| Specification | Value |
|---|---|
| Volume | 8.5 oz (250 ml) |
| Active Ingredient | Phosphate remover with amino acid supplement |
| Storage | Room temperature, no refrigeration required |
| Target Species | Zooplankton (500–1000 μm), stony corals, clams, tube worms, larval crustaceans, juvenile and adult fish |
FAQ
Can this product be used in a reef tank?
Yes, it is suitable for reef tanks as it targets phosphate without harming corals or invertebrates.
How often should I add this product?
Add according to your tank’s phosphate levels; typically every 1-2 weeks depending on water changes and fish activity.
Does it affect water pH or alkalinity?
No, it does not alter pH or alkalinity levels.

Ruth Simpson –
Used this in my 100-gallon reef tank for three months. Phosphate levels dropped significantly, and my clams and tube worms are more vibrant. No negative effects on corals. Easy to mix and store.
Warren Glover –
Good product for reducing phosphate. Works well with my juvenile fish and planktonic species. A bit expensive, but effective and reliable.
Keith Ferguson –
The amino acid addition helps improve coloration in my small fish. I’ve noticed better pigmentation compared to before. No issues with water chemistry.
Thomas Sanderson –
Works as expected. I use it every two weeks after water changes. My corals remain healthy and the water clarity has improved.