Do you know what I think is strange :
I saw a documentary from Canada in which gen altered corn "Roundup ready" was fed to cows which caused all kind of issues (suspecion was on the overuse of te same Round Up)
On the other hand the simplest pet-meds are not allowed grrrrrrrrr.
Mmmm he kept and bred C.meinkeni.
Those have a different way of laying eggs etc.... but seems to be quite nice and docile fish. He didn't expect any issues.
But you got your info from Chromedome allready !!!! Great. Awesome fish !!! Good luck.
Sounds like a "good" human study.
One puts fish in a too small / crowded environment and use stuff to calm them down. Uhhhhhhhhh if you provide the right environment / space you don't have to calm down anything.
What exactly is your question. Seeding a new tank?
Corys are not prone to Hex (why did you cranck up the heat BTW?) but often appear to be sensitive to brand new tanks (new substrate). So I'd seed the filter and let the substrate ripen before you add the Corys.
Not want to be rude but anxious to know why you would rehome the Pearl that only is showing its natural behaviour.
You have made something that doesn't exists in the wild (a gourami community tank) and put fish in that all have their own natural behaviour. But if the fish don't "behave" you're...