Simply place in the sump of your aquarium setup, and let the Amphipods and Copepods move in. When ready, place your thumb over the centre hole and move to the display tank. Using a baster insert it into the centre hole and expel the Amphipods and Copepods into the tank for food for your fish.
Consists of 5 levels of chambers. You can place food in the centre hole if you wish to aid the process.
Roughly the same size as a hockey puck, 76mm Diameter x 27mm thick.
3D printed in reef safe PETG material.