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Seachem Seachem PhosGuard Phosphate & Silicate Control
Seachem [11442-503270]

Seachem PhosGuard Phosphate & Silicate Control

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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.

  • Removes phosphate & silicate from fresh & saltwater systems
  • Highly porous & bean-shaped for maximum absorption & water flow
  • Causes a decline in hair algae & enhanced coral growth


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.

Price:$6.07 to $111.00
$18.50 per month*
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250 mL
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Status:In Stock
Model:186
UPC:000116018609
Sku: SC01860
Id: 503271

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500 mL
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Model:183
UPC:000116018302
Sku: SC01830
Id: 512187

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1 Liter
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Model:187
UPC:000116018708
Sku: SC01870
Id: 503272

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2 Liter
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Status:In Stock
Model:188
UPC:000116018807
Sku: SC01880
Id: 503273

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$111.00
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$222.99
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BULK - 8 Liters - (4 x 2 Liter)
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Status:In Stock
Model:01880M
UPC:688713100493
Sku: SC01880M
Id: 589190

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