is discus tank too crowded?

[Boldly]

Yeah, if you're married to the 75, maybe drop to 6 Discus. They'll thank you for it. Less stress, better colors. Plus, your filter won't have to work overtime.

[coralCartel]

Another thing: how's your substrate? Bare bottom or sand? Bare bottom tanks can handle slightly higher stock since waste doesn't get trapped. Just a thought.

[pacer]

Yo, my LFS guy swears by 10 gallons per Discus minimum. Your tank's on the edge, but if you're doing 50% water changes weekly, it could work. Just keep an eye on their behavior.

LFS advice is hit or miss, but 10 gallons per fish is a solid rule. Your tank's at 9.375 gallons per Discus, which is cutting it close.