So I got some fish and qt them bc they were from PetSmart I have had them in the qt tank a couple weeks however the tank has been cycling with them in there... I've been doing PWC and am now using ammo neutralizer and salt. Anywho I am noticing a little black on them I know it's probably ammo burns but I read it could be the start of fin rot. I have a 55 that's almost cycled and will be their perm home. My question is should i move them to the 55 as soon as it's cycled or should i leave them in he qt a couple more weeks!? I've got nitrates in the qt tank and the ammo and nitrite are finally coming down. I did 2 PWC today and 2 yesterday. Should I treat them with something to make sure it's not a bacterial infection!? For future... How can I keep my qt/ hospital tank cycled so I'm not putting so much stress on my fish?? I thought about putting some melafix bc I hear it was good for ammo plus it would help if it's finrot but I figured that would kill the cycle... So ive just been doing pwc and salt.