Product description

This HOG.5 scrubber (tm) has 12 square inches (75 square cm) of algal growth surface, which is designed to absorb the nutrients from this much feeding per day: 0.5 Frozen cubes, or 5 Pinches of flake, or 5 Square inches (31 square cm) of nori, or 1.4 grams of pellets The number of gallons or liters of water in your tank or sump does not matter. If you feed more than the above amounts, you can get multiple HOG.5 units; multiple units are preferred over one larger unit because you can clean one unit per week, and because you'll always have one unit filtering while the other one starts growing again after a cleaning. Multiple units are also good for backup. The magnets attach the outside cover to the inside cover, through the aquarium wall, and can be used on glass or acrylic up to 1/4 inch (6.25 mm) thick. Not more. If your aquarium wall is 3/8" (9mm) or bigger, then put the filter on your sump wall instead; it will work the same. No electrical parts go inside the aquarium; only air.

Directions

Attach to aquarium or sump glass, using magnets provided