Hello, i have 6 cory trilineatus, had them 3 weeks, the tank is 3ft 20ukg. (36 x 12 x 12)
Water tests:
ammonia - 0 Nitrite - 0 Nitrate 10
ph 7.4
other fish in tank - 9 neon tetra, 2 otos.
overfiltered.
twice weekly water changes - about 35% per week.
Anyway, ive noticed basically since i...