Innovative Marine Gourmet Gadget Grazer PRO. Yes, its $20. But it works, you'll never have to buy another one, and I cut two strips the width and length of the gadget, put down one, sprinkle a little bit of Reef Roids between the sheets, and shut it. Magnetic, put it in the tank, they have to pick the little squares, they get some extra nutrients from the Roids, and what Roids they don't eat gets released into the tank for the corals. The thing is awesome, been using mine for 5-6 years now, tang is 13 years old and loves it. There is a bit of waste, the sections between the squares is a little thick, but that makes it sturdy, and I usually leave mine in overnight, the next morning the snails have "sucked" most of the stuff trapped under the connecting sections. Really ends up feeding multiple animals if you use it right.



