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965 Views 4 Replies 4 Participants Last post by  cichlog
I just recently set up a malawi fish tank (58gals), now with 16 fish. I noticed that most of them are scratching on the substrate. I added fine coral sand on ordinary aquarium gravel. I read that fine coral sand causes gill irritations on fish. Is that true? All the stats (ph, kh, gh, No2, No3, ammonia) looked ok. Fish seemed happy, anyway.
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mine did that 2 when they were first add in the tank they are like just getting use to the new tank
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