If you’ve been following, I had to move my zebrina pike to a 20 gallon grow out as the nitrites spiked to avoid a possible death which I wasn’t really willing to risk. The nitrite spike lead to an African butterfly dying previously. I waited till I got the nitrites down to .25 consistently in the tank until I added the pike back into the 125 gallon (about 3 days). The pike had been hiding ever since I put him back in, assuming a high level of stress given his shipment to a importer then to me and the nitrite spike all within a month. As I fed them trout worms and blood worms today, I noticed what appeared to be ich covering his head and gills. He is the only one in the tank showing symptoms. The other grow out has small bichirs and I feel the main tank already has the ich infection/exposure and don’t want to add him to the other tank to only spread it. So I treated the tank with non-iodized salt and cranked the temp to 80 degrees from 77. I am assuming the ich outbreak is due to stress? Should I do anything else aside from salt and higher temp? Do I need to remove the carbon from my canister filter? And how often should I add salt or should I switch to medicine? I just don’t want to lose this fish and this has been another gut punch as I thought I was out of the clear. ?