Continuous, Uninterrupted Performance: Many traditional cartridge-based, power filters rely on the cartridge unit to provide biological filtration. Unfortunately, when the cartridge is disposed of, so are the essential, beneficial bacteria - potentially causing critical conditions in the aquarium. Because the sand remains in the SandMan when the floss and carbon cartridges are changed, biological filtration continues uninterrupted and your pet's safety is not compromised.

Safety Designs: U:/CUL listed - safety for yourself and your fish. Check valve strainer prevents the intake siphon from disconnecting during power outages or when the filter is simply unplugged during routine water changes or maintenance. Quick, easy restarts, every time!

Ease-of-use: At Wardley, we believe the simplicity is the technology. The SandMan does not have excessive and imposing valves, tubing, fittings, etc. ... to connect. It does not require drilling holes in the aquarium, or other specialized rigging devices. It comes complete out-of- the-box, ready-to-use. Welcome to "Plug-N-Play" filtration!

With the SandMan filter system, sand is the filter medium of choice for several reasons: thousands of grains fit into a small area, providing a very high total surface area for natural, nitrifying bacteria to grow upon, sand has a highly irregular surface area, further increasing its surface area vs. spherical shapes, and sand is essentially inert with no secondary effects on water quality.

An additional prime benefit to fluidization is that each grain of fluidized sand is continuallly bumping into other grains or the filter walls. This creates a "self-scrubbing" condition which minimzes the development of a bio-layer or slime which can reduce filtration efficiency. The sand in the biological chamber of the SandMan filter is virtually amintenance free.

Fluidized Grains Of Sand (Magnified 20X)