BEEN TRYING MY colony of 1m 4f for aver a year, success today. left them alone, did bugger all to the tank, one sponge filter heaps of airation, 2 small powerheads pointing across caves, fed only on hikari algae wafers and carnivore pellets, 50% wc with tap water, drop[ from 29-23c in wc, raised rapidly back up to 29 overnight.