Definitely the white cloud minnows. I think everything else would struggle in a setup like that. I would put at least a small sponge filter in the bottom cause you could easily hide the airline tube
I would say it’s just not getting enough nutrients and is getting out competed. Try more easy green and no water changes or gravel vacuuming. Only water change when nitrates get above 40 ppm and that might help
I am setting up a 20 high with dwarf baby tears and I was wondering peoples experiences with co2 tabs. I’m trying to get a good way to set it up under something that will catch the bubbles and let it dissolve into the water
Don’t boil cause they could explode🤯. I would just rinse in tap water and dry with paper towel. Slate is normally inert so it shouldn’t effect water parameters