antibacterial medicines also kill all the beneficial bacteria as well. your tank would go through another cycle most likely or at a bare minimum, have some pretty decent ammonia spikes. you really need to find the root of the problem as the phosban and the antibiotics are just a quick fix. I am sure you have read through some of the other posts on cyano
, but have you tried all the suggestions? Limit feeding, increase water flow, siphon out visible cyano
religiously, lots of water changes using ro
water? I know from personal experience that this is a frustrating problem, but you can eventually get a handle on it by doing the above things.
I realize this does not answer your question about the inverts, but I honestly am not sure about the answer.