First time poster here
I am fairly new to fish keeping and have a few disease questions...
I have a 220ltr (55g) freshwater, planted, tank that was set up about 8 weeks ago. I slowly introduced a few fish each week (5 neons, another 5 neons, 1 bristle nose catfish, 1 pre-existing clown loach, 2 small clown loaches).
0 Ammonia, 0 Nitrite, 0 Nitrate (I think the plants are taking all they get), 26 deg C, Ph 8 (just like my tap water). I do a 30% weekly water changes.
Problem 1: 6 days after I introduced the 2 small clown loaches I noticed that they had ich. I increased the temperature to 29 deg C and the next day I treated with Blue Planet Fungus Cure (Malachite Green and Acriflavine) at half strength (as recommended for the loaches).
Question 1: 72 hours after increasing the temperature and 48 hours after commencing the treatment they have more spots than ever (see recent photo). From what I have read the spots should be gone by now? I can't see spots on any other fish. All fish are active and eating normally though the 2 loaches are flashing and occasionally breathing at the surface.
Problem 2: Several (4-5) of the neons have some degree of fin damage and a couple (2-3) have white growths on their mouths that appear to be getting larger. I noticed these problems when I first brought them home and assumed they were damaged from overcrowding in the shop. I didn't see the problem in the shop because they have so many swimming around, too fast to see properly. It doesn't look fungal and the internet is full of other people having similar problems with neons. All of my neons are active, eating normally and schooling.
Question 2: If the Blue Planet Fungus Cure doesn't work should I euthanise the fish with growths on the mouths, despite the fact they otherwise seen fine, or try some other course of action?