My clown loaches in my tank have had whitespot for about 2 weeks now. I have treated it with two types of medication now and turned up the heater to 28c to try and shift it but its being persistant. None of the other fish in the tank have it just the clown loaches. The medication i have tried are interpet anti white spot and waterlife protozin. One thing i havnt done is take the carbon out my fluval 405 filter while treating. Thing is if i take it out its going to damage all the bacteria on the carbon. My water quality has already dropped I read the nitrites about 0.3 this morning.