Hiya,
I am treating 'in tank' for ich
Had it once months ago for the first time ever in a smaller tank, used the interpet medication and all was cleared up pretty quickly
A new opaline gourami (amazing markings) has what i was sure was ich, i went with api medication, to be honest that did nothing, now i've litterally just started a course with interpet medication, hopefully before the next dose is due i should see a speedy recovery as i did previously
None of the loaches or any other fish show signs of ich, but i'm sure a female guppy must have it as she's trying to scratch/scrape herself on substrate and plants (no signs on her though so i'm keeping fingers crossed she treats fast being a lot smaller than the gourami)
Luckily i can intice most fish close to the glass so i try to inspect them for any signs of ich, as said only the gorgeous opaline shows visual salt spots thus far
Hopefully your ich will treat quickly
And yeah clown loaches like gourami's so i read are very susceptible to ich (weird in a way, some of the most stunning fish have a kind of immune weakness)
Well i sure hope the ich treatment goes well
Tony