My tank is 3 months old and I did a water test today after noticing my corys are loosing their barbels. Please see the details below.
Tank Size: 280 Liters
Filter: Canister 2400 lph
6x Lyretail Killis
3x Julli Corys
16x neon Tetras
6x Golden Pencilfish
: Between 3 and 4
High range PH: 7.8
Ammonia: 0.25 ppm
Nitrite: 0 ppm
Nitrate: 5 ppm
Over the last month, I have lost 1 Julli Cory and 1 SAE
. They have vanished without a trace and I cannot find any remains even after uprooting my plants and rocks both times. I worry the dead fish may still be contributing to the ammonia maybe?
I have also started noticing suspended detritus / plant matter in the tank and it seems to be going through my canister filter without being caught. I can tell because my spray bar starts getting clogged with this material form the inside.
Filter has fine and coarse sponges in bottom tray. Ceramic rings in 2 middle trays. Purigen on top tray with more ceramic rings.
I think my PH is also higher than it should be.
Appreciate any advice on how to fix these problems please.