What is SCWD?
SCWD is a water switching or current generating device. SCWD switches or alternates water in two or more directions, depending on set up. It is an excellent water current generator for both salt water and fresh water environments, whether tank or pond. SCWD also has garden applications. It may be installed in statuary to create alternating or switching water flow from one spout or outlet to another or create decorative displays in garden ponds. The patented device, which requires no electricity, directs water between two outlet ports at varying intervals. The higher the volume of water flowing through the SCWD, the faster the switching response.

Top aquariums throughout the U.S., such as Atlantis Marine World, Birch Aquarium at Scripps, Monterey Bay Aquarium already have used SCWD.

Why do you need a SCWD?
There is a growing need for affordable wave makers to improve aquarium and pond ecosystems and protect expensive coral, fish and other water life and exotic investments. Most wave makers currently require electricity and are expensive. Until now attempts at inexpensive mechanical options have not been optimally designed or manufactured. Small, compact, inexpensive, and manufactured in the USA, SCWD does not use electricity, generate heat, or clutter your aquarium, pond, or garden environments. Get the clutter out of your aquarium install SCWD on the outside of your tank.

SCWD is regarded by industry experts as the most energy efficient wave-making product on the market. It replicates nature by generating alternating currents within a tank or pond. These currents stimulate coral, fish, and plant growth and keep other aquatic life healthy because of the tank or pond’s increased water currents and oxygenation.

Flow Efficiency Ratings Below is data provided by one of our distributors as a result of flow testing. Using powerheads of various gph ratings they were able to provide flow-in ratings, flow-out, switching speeds, and efficiencies.  Flow into SCWD SCWD Output Efficiency Switching Duration  150 gph 90 gph 60% 22 seconds  180 gph 120 gph 65% 16 seconds  240 gph 180 gph 75% 12 seconds  270 gph 210 gph 80% 10 seconds  330 gph 240 gph 80% 9 seconds  400 gph 360 gph 90% 7 seconds  600 gph 540 gph 90% 5 seconds  720 gph 660 gph 90% 4 seconds Converting psi to feet: Fresh Water Multiply the psi by 2.31 to derive feet. example: 5 psi X 2.31 = 11.55 ft Salt Water Multiply the psi by 2.25 to derive feet. example: ex: 5 psi X 2.25 = 11.25 ft