***POP***!!!!!!!!!
there goes one of my favorite can of worms being opened, lol
well here goes, sammy said it perfectly, i agree 100% and have gotten into many heated debates on this topic, but i still stand here saying it again
IMO, no not in a reef tank, b/c(as sammy said above)........... isall too true, IMO
they do not cure or prevent ick on the fish but kill the ick floating in the water
and with ick, IMO if it is in the water, it is too late, b/c it should be on a host and will be until the host dies, and it also kills many tings you want in the water as well
quarentine for the diseases and parasites, and balance the tank for algae(mean, watch feeding, and water parameters, and get a clean up crew to help and watch stocking levels), JUST IMO though