Who Gives A Fish Forums

Mine do this too! I thought it was weird at first, but they've been fine for months. I have a 55-gallon with four discus, a bunch of tetras, and a pair of rams. They flare mostly during water changes, maybe 'cause they're stressed?

Thanks, all! Gonna try the drip method and thin the sand. Didn't realize flow could bug them—my filter's wide open. Will dial it back and report.

What's your tank cleaning routine for discus? I've got a 75 gallon with 6 adults, sand substrate, and a canister filter. Doing 50% water changes twice a week but they still seem stressed after. Temp's at 84, pH 6.8. Maybe I'm missing something?