Looking to restock my planted 10g, wondering if a pair of A. Cacatuoides might fit. My water is a bit on the hard side -pH above 7.6, somewhere between 150 and 200 ppm hardness. I know they likely wouldn't breed in this but would they survive? could they be happy? Or should I go back to hunting down those killifish that seem to have disappeared from the shops just when I need them? :?