What kind of shrimp are they @giantlumberjack? Amanos are relatively safe I have found, whereas cherry shrimp need a thick ‘lawn’ of micro sword to keep them alive!
Slime coatings are one of the most vital parts of a fishes immune system, a bit like your skin; it fends of fungal infections and diseases. Try taking it back to the store and using an old credit card to clean it off the glass.
It really cool watching peoples journeys from starting from their first (100% plastic) tank, and learn how to be master breeders.
Do you do live plants?
I checked out a couple of YouTube channels (KeepingFishSimple) who have had success breeding rare plecos, and they recommend to do a quick temperature drop, which then triggers spawning behavior.
What I meant by too soft was the GH or KH or whatever you call it. Seeing as I’m trying to breed a lot of fish for an event, I’ve temporarily stopped my hybrid attempt.
Thanks anyway, @anewbie!
Try and replicate the same conditions in the new aquarium.
Dark water may be a problem… maybe halve the moss and put one half in the new tank to see how it does.