So I know I posted about the parva rainbow she isn't better still has the growth by her gill but still swims and eats like a pig so not sure what to do but I noticed a small white fuzzy looking patch on my bosemani, he eats and swims crazy as well, I don't want to give up the hobby but I can't go through another Case of this either, I lowered the tank temp to 75, I don't have any meds on hand except rid ich + and salt which I know i can go half dose and not kill my plants but I'm not sure what I should do here's a couple pics.
Fungus or columnaris https://imgur.com/a/INxh0
Fungus or columnaris https://imgur.com/a/INxh0