I really enjoy the white sand substrate I chose for my tank. However, my juvenile peacock bass is a very voracious eater with eyes bigger than his stomach. As a result, there is a lot of waste on the substrate, which really contrasts the white sand. I know too much waste is also not good for his tankmates nor himself. I have a siphon at home that I plan on using to rid my tank of the waste. However, I don't want to siphon too much sand along with the waste. I read that using the siphon above the substrate instead of digging into the sand is the best way to go (which makes sense). What do you suggest I do?