[Daniel475]

so my last post i was trying to fix pop eye was treating with laguana melafix i know its way stronger and i was just using the recommended dosage for the tank but maybe it was to much and stressed him? his eye did look better in the few days he was treated.. now ive noticed one of them have hole in the head just starting? is there anything i can do to cure this??? i cleaned out my canister filter like a week ago im thinking the bacteria may be a little low but ive been using cycle to help with the low good bacteria levels?

any help would be great

thanks
daniel