Hi there, just wanted to say that your snails look lovely and I'm interested in getting some in the spring. I have a small duckweed sump that I think would work. Do you have suggestions for how to make it more snail-friendly? It has nothing but duckweed, a few sponges, and a PVC pipe at the moment. Water: pH 7.5, temp 65 F (will probably go up to 76 F but no higher in summer), hardness - argh. My tap water has zero KH and 0-30 GH; I've used cuttlebone pieces and a little sodium bicarbonate to get those up to 80 and 60 respectively. Will this be okay for the snails, or is my soft water going to be a problem?