Overview
Seachem PhosGuard is a highly porous filtration media that controls phosphate and silicate levels in freshwater and marine aquariums. By binding these nutrients quickly, it helps prevent the algae blooms that cloud water and stress aquatic life. This 4 L size suits larger tanks and water features that need sustained nutrient management.
Key Features
- Granular, highly porous media that works through adsorption
- Removes phosphate and silicate to limit algae growth
- Promotes clear, healthy water conditions
- Does not chemically alter water pH
- Effective in both freshwater and marine setups
Specifications
| Spec | Detail |
|---|---|
| Weight | 12 lbs |
| Dimensions | 10 × 10 × 14 in |
| Brand | Seachem |
| UPC | 116018906 |
About Seachem
Seachem produces science-backed aquarium media and water-care solutions used by aquarists around the world. Visit Seachem.
Frequently Asked Questions
Will PhosGuard change my water chemistry?
No, it adsorbs phosphate and silicate without altering pH, making it safe for all aquatic life.
What tanks is it suited for?
It works in both freshwater and marine aquariums and larger water features.


























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