I'm having major issues with my tank and need some advice. I'm battling ammonia very high levels I don't know why this keeps happening. Iv got a 75gallon tank with 3 blood parrots and 2 pletcos I used to have 5 blood parrots but I lost 2 of them. I got a canister filter system for up to 100gallons it's brand new have had it for 2 weeks I just did a complete new set up on my tank and started fresh and all my levels were good until today and now my fish are white and barely moving so I took them out of the tank and put them in fresh water with bubbler and heater for the night so I can do something with my tank I need help bad someone please help me