Seachem PhosGuard Phosphate/Silicate Control - 17 oz |

Seachem PhosGuard Phosphate/Silicate Control

by Seachem

Selected Option: 17 oz
$28.99 (You Save 45%)
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In Stock
Selected Option: 17 oz

Key Features

  • Removes phosphate and silicate from fresh and saltwater systems
  • Highly porous and bean-shaped for maximum absorption and water flow
  • Causes a decline in hair algae and enhanced coral growth
  • 500 mL / 17 fl. oz. (Treats 600 L (160 US Gallons))


Seachem PhosGuard Phosphate/Silicate Control 17 oz

SeaChem PhosGuard rapidly removes phosphate and silicate from marine and freshwater aquaria. It is not recommended for phosphate buffered freshwater. SeaChem PhosGuard is highly porous for high capacity and bead-shaped for optimum water flow.

SeaChem Phosguard outperforms all competing products. PhosGuard is a high capacity and high efficiency filtration product for removing phosphates and silicates from marine or fresh water aquaria. Unlike competing products, PhosGuard is bead-shaped for optimum flow characteristics and has an exceptional porosity for enhanced capacity. PhosGuard has a working capacity to remove 20 to 60 mg/l phosphate in 100 gallons with a similar impact on silicates. It may be used continuously or intermittently, and will not release removed phosphate. PhosGuard will cause a decline in hair algae and enhance coral growth. Each liter treats up to 300 gallons. Marine or freshwater use.

Instructions: Use 1 cup for every 75 gallons. Leave product in place for 4 days, then test phosphate and silicate.


Brand Seachem
UPC 000116018302
SKU 183
Item Number L-SC0183090912D17-16996
Size 17 oz
Weight 1.4 lbs.
Pkg Dimensions 6.31" (L) x 3" (W) x 3" (H)

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Reviewed by Wallace V. on Apr 11, 2021

Reviewed by william Usry on Nov 26, 2020


Reviewed by Daniel Warshawsky on Nov 15, 2020


Reviewed by Bruce H. on Nov 13, 2020

Good item

Reviewed by Bonne S. on Nov 12, 2020

Green Algae Issues Fixed. It Works!

Reviewed by Johnnie Rothlisberger on Oct 30, 2020

Easier and cleaner to use than ferric oxide

Reviewed by Mary Sharpe on Oct 10, 2020


Reviewed by Nancy Martini on Oct 1, 2020

Does what it claims

Reviewed by ISAAC/CIERA B. on Sep 27, 2020

Product was damaged

Reviewed by Diane Libor on Sep 27, 2020

Best phosphate remover

Reviewed by Rafaeo V. on Sep 22, 2020

Phosphate Remover of Choice

Reviewed by Kristi C. on Jul 17, 2020

eliminated all my phosphate problems

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