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Easily removes tough algae in glass aquariums
strontium chloride
measure hardness (GH) first
3 will never quite get there
Removes chlorine
SEACHEM PHOSGUARD Size:1 LITER Easily removes tough algae inRapidly removes phosphate and silicate from marine and freshwater aquaria. Not recommended for phosphate buffered freshwater. Highly porous for high capacity and bead shaped for optimum water flow. Outperforms all competing products.
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