Hey there everyone! question re: filters
My tank is doing pretty well at this point. I've lost a couple, gained a couple, but all in all the majority of the group is doing fantastically.
I have made one major change - I moved the feeder to a smaller tank. I was suspecting (based on his eating habits of pushing the other fish out of the way to eat as much food as possible) that he was the culprit behind my continuing ammonia problems. Decided to try moving him to his own bowl, and in just a couple of days I am already seeing a steady drop in ammonia (down to between .25 and .5) and I'm getting nitrite readings for the first time ever (just shy of zero). Nitrates are a solid 5.
I am down to one panda cory, which is too bad because they were so cute. I don't know what to do - he looks like he's "panting", like he's not getting enough oxygen, but the rest of the community is fine, my bubble stone is constantly running, and the filter is working properly.
Anyway, I am about to undertake the challenge of cleaning my canister filter and wanted to make sure I wasn't replacing the filter I should keep. There is the black carbon, a white "fine" filter and a blue "coarse" filter. I assume it's the black one I should just rinse with de-chlorinated water? Let me know if I'm incorrect.
36 gallon bowfront w/all fake ornaments, Eheim 2213 canister filter, one sub heater (have a hanging heater for backup), and a 4" airstone.