In a message dated 98-01-19 17:30:14 EST, Leo writes: << I would like to know from > experienced Apisto keepers and breeders if white silica sand is suitable for > use in a planted community tank and also in Apisto breeding tanks. >> >> Im my experience, white gravel makes Apistos "paranoid" I had a friend in Welland who had two trios of A. borrellii in tanks with white sand. There had been no spawning activity after a considerable time, even though he had acceptable water conditions and feeding regimen. I took one trio home and got a spawn in about a week over a black substrate and with the back of the tank painted black. While I have seen little difference between painted and clear backs, the substrate color seems to play a significant role in whether the fish are willing to settle in. The darker the better, it seems.