At one point, I was down to what I thought was only one scud in a 3 gal plastic tank. But they've slowly come back, and I now have a fair number in the little tank, I'd say at least a dozen. Most are less than full grown, unless they're stunted. The tank is in a south window, but shaded by a covered porch. There's been a gorilla grass plant hanging on in there from the beginning. I thought it was gone a couple times. I feed the scud a pinch of tropical fish food each day. I have added daphnia and some smaller crustacean with a name I don't recall at the moment. I've had these little crustaceans as long as I've had the scud. The daphnia disappear quickly when I put them in with the scud. The scud tank is coated with algae. I change the water by removing a few cups now and then. I think more often is better.
