hi.
20 gal tank
10 cardinals
3 khuli loaches
planted tank / co2 and UV.
had been set up for 6 months. never a single death. Wanted a larger filter so added a new one (canister) in series to the old one last night. Woke up in the morning and all are dead. Every single one of them! i feel pretty low.
my guess some toxin in the new filter? If so how long should i wait until i put some more fish in. should i run a big ol' bag of activated carbon in there for a few days?
water parameters were all good - ph - 6.5 dh/kh close to 0. Ammonia / nitrites / nitrates 0. Temp 26.5c.
thanks all.
20 gal tank
10 cardinals
3 khuli loaches
planted tank / co2 and UV.
had been set up for 6 months. never a single death. Wanted a larger filter so added a new one (canister) in series to the old one last night. Woke up in the morning and all are dead. Every single one of them! i feel pretty low.
my guess some toxin in the new filter? If so how long should i wait until i put some more fish in. should i run a big ol' bag of activated carbon in there for a few days?
water parameters were all good - ph - 6.5 dh/kh close to 0. Ammonia / nitrites / nitrates 0. Temp 26.5c.
thanks all.