I had velvet outbreak in my system in April, lost bunch of fish. Then, I was going on vacation so it was not a good timing to treat fish that survived. I am ready to qt now, I left sponges and matrix in my sump for 6 weeks, I have cooper power, hanna cooper test and ammonia badges. I have never used cooper before. What level of cooper should I keep 2.0? The fish I have left look absolutely healthy. How should I qt them now?
What type of fish? 2.0 is my new target.