Tagging on to this question as I had a similar question to the OP...
I have a cleaner wrasse with a cloudy eye that I am trying to treat. I am also treating while in TTM. I had him in BiFuran+ for the first three days, but he took it real hard - layed at the bottom and didnt eat the whole time - so I switched to Nitrofuracin Green at the second transfer. He is acting much better with the NFG but I am not seeing improvement in the eye. I'm going to try formalin dipping him between transfers this weekend.
A question about using antibiotics during TTM - both the antibiotics I have used call for re-doses every 24h. I assumed this is because the active ingredient is only stable for about 24 hours and you are re-dosing to maintain theraputic dose. However, when I transferred the wrasse and I had a tank that had been dosed three days in a row (with partial water changes performed before each dose) next to one with a single dose, the tank that had been dosed three times was noticeably more green. Now I'm wondering, is there a cumulative effect to the repeated doses that gets interrupted by transferring the fish to a new tank (i.e. 100% water change, vs the partial water change before redosing that is recommended)?