They only lasted a couple days I didn't really get a chance to see them but I am guessing it was starvation that killed them, possibly my soft water too.
Sorry to hear that. They are reaaly cool. I once had several in my 30 gallon. They were constant feeders but then, months into it I noticed them picking the substrate. Tried adding suplements, but they kept picking so I returned them in fear they'd starve in my tank. My water is suuuuuper soft.