PhosGuard™ rapidly removes phosphate and silicate from marine and freshwater aquaria. Although PhosGuard™ is effective in both fresh and marine water, it will operate better in sea water and the need for it is better defined in sea water. It is not recommended for phosphate buffered freshwater (PhosGuard™ would remove the buffer until saturated). PhosGuard™ is highly porous and bead-shaped to promote easy water ﬂow through and around it, thereby increasing both its efficiency and capacity.
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We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. For more information visit our Refund Policy.