Managed to get my BN upto 7'' with regular tank maintenance, live food every other week (the protein really helps maintain good coloration, and I'd wager it helps growth to an extent), with cucumber/peas as its main food source excluding driftwood scattered around tank. Wafers are 'ok' but I wouldn't feed them with those every meal - I mean, would YOU want to eat what looks like cardboard disintegrating in water?