Hello I bought 100 ml of phosguard for my 10 gallon which had a massive algae bloom. When should I replace the phosguard? i plan on only using it for two days every week how long should it last?
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OK I get it change after 4 daysWell it comes in a bag that I can't change so I'm stuck with 100ml

I have soft corals and I used phosguard [emoji4]If you find leathers or other soft corals close up, you might switch to a product that doesn't contain aluminum.![]()

