Fish Feeding

Evening water check:
Ammonia = .025 but closer in color to 0
Nitrite Almost certainly 0.
I attribute positive change to new filter media and the new air pump that drives my bottom filter. (that thing is now bubbling really well and loud).

I also reduced the feeding amounts.
Fed the fish today.
The red slime is still taking over the tank. I'm considering buying a canister filter (Fluavl 10x series), especially given the hot summers in New York. I don't think the fish will survive under 86-89 F! So to avoid that I plan to buy canister filter and install it inside of the dorm fridge to use a filter/chiller kind of thing.