I ended up taking these. Cindy, they hatched about 45 minutes after transferring to the growout tank. Near 100% hatch, look to be VERY healthy larva. The light over the tank died in the middle of the night, but I've got a new light on the tank now. The rotifer cultures are very dense. This should be fun. It's been about 2-3 years since I last was raising clowns.