feed feed feed.. and maintain WQ. My guppies get fed every time I walk past the tank. I also keep live plants/driftwood in the tanks to scavange off of. my feeder/livebearer tanks get just as well filtered as my "real" tanks do if not more so. I put a sponge over the uptake tube that gets rinsed weekly or more, so babies don't get sucked up. and lots and lots of hideing spots from the parents.