Bare w/ me. I’ll try shortening this. I believe it was ich. Tank is new. 3 months old, I cycled and once ammonia and nitrite hit zero I put the three clowns in. They were in observation the whole time tank was cycling and had one dose of prazi for good measure. They all ate great, never saw white poop. Drip acclimated. Popped in DT and immediately saw what I think was ich on one. I can only assume the 30-40 min of acclimation stressed her out. Picture attached of what I saw. And another pic now in observation.
I had sponges in sump for DT the whole time seeding them. Put clowns back in observation tank and turned into QT with cupramine. Used one sponge from DT sump for QT tank. After about 34 days therapeutic copper I set up a new observation tank with all new equipment. The sponge from QT went in the trash. I grabbed another sponge from my DT sump for the new observation tank. So the DT was fallow for 43 days and still is fallow.