I have a wild caught group of 7 in a 40B, pool filter sand substrate with some Buce, sticks and leaf litter. I'm in Frederick and my water (city) is on the hard side, but you don't have to chew it. I've tried the low water with cool fill thing. They seem to behave like Corys, all wiggley around the substrate and playing with each other. I've fed live blackworms, frozen brine shrimp, frozen bloodworms and a variety of flake and pellets. I've even played Barry White on a loop overnight. What conditions did you have when they spawned for you?