Thanks David. That tank is due a water change anyway, maybe I'll do one tonight. For livestock, all I've got in there now is a hi-fin banded goby and his buddy pistol shrimp, so I probably overfeed the tank for what it needs. Some monster bristle worms in there too, they could go on a diet.I'll try to suck the worms out. I've noticed that they squish really easily. Not sure if they're like aptasia where little worms can grow out of the parts of other worms.