Our H2Overflow® screens provide an amazing volume of skimming with a minimal footprint, allowing up to 1200 gallons of water to flow safely and swiftly into the filter system. The large skimming area, with tapered screen openings and open top, minimizes the risk of a flood caused by debris, clogging the screen. You can combine multiple H2Overflow® aquarium filters in one aquarium, which greatly increases the turnover rate for water through the filter system. The skimming screen sits above the top rim of the aquarium, eliminating unsightly water lines, and the entire unit installs out of sight at normal viewing height. The H2Overflow® displays a portion of the water that a traditional aquarium overflow box does, and still provides more inches of skimming. Our H2Overflow® Stealthbox® has 1200, 2400, or 3600-gallon per hour capacity!