or you can just gently wave your hand over the rock. and this is free...lol
That's a GREAT idea. I do that right before some of my water changes.
I thought I saw someone with a "pipette". Something like a long straw with a bulb at the end. I'm not sure what they are really called. Long enough to not have to put the hand in the water. I wonder where they can be had?
Seems to me it would be better than a turkey baster
Megabyte