How much to feed 2 clowns

[Sjhoppes]

I’ve found that about 15ml of water out of the tank thaws it pretty quickly if I swirl it around a bit. I pretty much chop it with a knife while it’s frozen. Put just what I need for that day in a cup with the water and put the rest back in the freezer. It thaws up in a couple minutes. Anyone see any issues with this? Usually eat 1/8 a cube per day.