I replaced the liner a month ago and had perfectly clear water, now I see fish poo galour I didnt see b4 and had fish for 20 years, shud I remove this poo or it ok for them to live in.
That all depends on your filter and how much you feed your fish as well as what type of fish.
Are you over feeding
Is your filter smaller
Is the filter mechanical mostly with little biological
What are you testing levels at is there signs of ammonia nitrate?
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