jmm197

I had to treat my 75 gallon aquarium for a bacterial infection the other day. This was on a completely cycled and established tank. I thought maybe it would not hurt the beneficial bacteria too much since it was an established tank but I was wrong.

My ammonia slowly went up last night, only to 1.5 or 2 though. I did a 40-50% water change and added ammonia clear by jungle. I did another 35-40% water change this morning and added more ammonia clear but the ammonia stays. Now the nitrite are going up to. still only .1 but I'm scared it's going to keep going up. I added some stress zyme this morning too, just to try and help the bacteria. oh, and I added charcoal to my eheim 2217, and I have 2 whisper 60's with charcoal in them running now too.

Do you think this is going to keep getting worse or is there a chance it could turn around?

If it does, what do I do?

75 gallon
pH = 7.6.
ammonia = 1.5
nitrite = .10
nitrate = 20

bolivianbaby

Sounds like a mini-cycle to me, probably caused by the meds. However, if it's starting to process the ammonia and show nitrites, I'd just keep up with daily water changes until it finishes. From the looks of things, it won't last long and you'll have your cycle back.

rt12

Do a water change everyday like 25% or more that will reduce the ammonia and other toxic levels but that same %. Don't do over 50% a day though. Also using seachem's prime is a great way to remove/ detoxify toxic levels

Shadowbeam

I had this same problem (or similar) with my tank and I just kept up with the daily water changes, adding Prime, and things got back to normal. All my fish were fine too