Scott,
Do weekly water changes in all our BB tanks. Also siphon out a lot of crud from them all. Have more algae on the glass problems with the GBTA tank (37g, 24"x18"x24" high) than with our other two BB tanks, so often do 20% water changes on it. Has only a pair of ocellaris clowns in it for fish that are fed once daily. No other animals in there to feed but the GBTA, well, now it's TWO GBTAs
When we first got it, fed small amounts of PE mysis every 2-3 days. For the past month or so have been feeding it PE mysis every 3-4 days.
The tank our GBTA came from had several clones in it. I was told by the tank's owner that the GBTAs were seldom directly fed and they all kept splitting like crazy on him. His lighting is 250w MH, my lighting is 175w MH.