Thanks.
Although I have 24 of the little critters now, I found that they are really cool looking and fun to watch.
I guess if that's too many I'll just have to start another tank.
There is no uneaten food in the gravel, the fish themselves, are pretty good about eating whatever food sinks to the bottom.
But I'm sure the shrimp are helping.
Besides, the shrimp really are fun to watch.
Both my kids keep asking me to get more shrimp.