ok, so after i posted this, i was away for a few days for new years. i came back and the CBB showed no signs of ick. in fact, he's now eating like a pig, he ate nearly two cubes of mysis today.
A little backgroubd on the tank he is in. Its a 30g, been up and running for several months with nothing in it but live rock from my display, and a few hermits. over the summer i had put a few large bags of pods form reefs to go in the hope of growing them out. filtration is a simple power filter. the cbb has been in the tank over 6 weeks. he's been hunting the pods since day one, ive seen him grab a few and ist cool, so i knew there was plenty of pods in the tank as well as baby bristle worms etc.
there wasnt any supplemental feeding over the few days i was gone. I wasnt expecting to see him in such good shape when i got back, but i didnt have anyone to help me while i was away, so i setup a topoff and i was gone for about 4 days.
today the fish even came up and ate mysis from my tongs, so hes also pretty used to me.
Whats the rule of thumb on ick, i know that if the fish is weak or stressed they are susceptible to the parasite, and that when healthy they are able to resist it. how can you tell the fish is in the clear without transferring it to another tank and doing the transfer method? if hes healthy, i dont want to stress it out and transfer it...