I just have them in tap water ph 7 with flourite and sand and some plants. There is a piece of mopani driftwood which is still leaching tannins but it doesn't seem to bother them. Otherwise, I just treat with Prime and so water changes once a week. Luckily most of these shrimp were raised a few miles from my house so I didn't worry about them having a problem with different water parameters. I feed them tropical flake and snail jello with Kens Invert Pellets.