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.
Thanks for all your comments. It's a relief to know it's just "flashing". I'm definitely sure it's not ich as I have had a long history of death and diseases in my previous tank set-ups.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Cichlid Fish Forum
A forum community dedicated to Cichlid Fish owners and enthusiasts. Come join the discussion about breeding, health, behavior, housing, adopting, care, classifieds, and more!