I recently have been wanting to add some shrimp to my tanks, just because I saw a tank full of them at my LFS, but I didn't buy any that day. I really think shrimp would make a good add-on in my setup, and I sure would enjoy them. My first choice was Ghost Shrimp, because I knew their requirements, but then @TexasDomer turned me onto Amano Shrimp, which I wanted to try since last summer, and never brought myself to be courageous enough to get any. I think I can handle it, at least they aren't as hard as Cherries, or other Neos. My water isn't hard, rather soft if you ask me. I don't have copper either, we don't use copper water pipes in our systems. I would still be getting a supplement to aid in maintaining a good hardness, whichever that may lead to me buying. Here's my stocking if you were curious. 31.2 gallon 20x18x20 10 Cherry Barbs 6 Albino Cory 1 Honey Gourami 1 Bristlenose Pleco 1 Mystery Snail My local fish store has some occasionally, so I would just buy as much as they had, and keep on adding until I reached that final number that I want. Thinking about six or eight would be fine. The benefit of buying just a few at a time would be that I can watch for any problems, or make sure they haven't died before I just buy a whole bunch of them at once. We'll see how it goes.