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Re: Green Microscopic Algae Problem

Subject: Re: Green Microscopic Algae Problem
by Fishlady on 18/1/2020 18:44:45

Do you have a test kit? If so test for ammonia, nitrite, and nitrate and post the results. I'd bet that the nitrate level is high and that is what is feeding the algae and allowing it to take over. The solution to that is more frequent, larger water changes. Most of us change at least 25% of the water every week to keep the nitrate level low. On the schedule you've mentioned, not enough of the nitrate (which is the end result of the cycle as ammonia from fish waste is converted first to nitrite and then nitrate) is being removed and is available as fertiliser to feed algae growth.