Zerc
Well-known member
So I noticed just a little bit of ich (i think?) on the fins of my powder blue, and on the side of my purple tang. This was in the first few days of July. I promptly bought a 20g quarantine tank and set it up. I put all my fish (the two tangs, a maroon clown, a firefish goby, and a royal gramma) in it and started changing 5 gallons of water per day for a few weeks. Now I am changing 5 gallons every 4 days or so. I used my swing arm hydrometer to lower my salinity from 1.026 to 1.02 in the first few days, then I bought a refractometer and over the next few days lowered it to 1.009. I thought the Ich had cleared up, but last night I noticed that my purple tang had a lot more cysts on it than before. What am I doing wrong? (I thought that Ich will die in these kind of conditions over a few weeks).