Are you using silica sand (white pool filter sand). Since I have never used silica sand I do not know how the Phosguard will react. It is white in the beginning and turns dark brown when it nears end of life.
Yes I am using silica sand why is that what is causing it how often do I have to use seachem phosguard
Re: univeral rock 3d background algae
Originally Posted by pitdogg2
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