Other than cartoons, on a Saturday morning there’s nothing we like more than receiving aquarium news delivered to us right in our comment box. Several months ago we reported that the new 1″ SCWD would not work when used with outlet devices that cause back pressure. One of the owners of 3iQ which manufactures the SCWD had this to say:
“under certain conditions, depending on pump size, back pressure and outlet line configuration, the SCWD may not switch consistently with Penductors or other restrictive outlet fittings. To address this, we have designed a Flow Extender that fits inside the SCWD Housing at the inlet. The Flow Extender basically provides a more focused flow of water to the Drive Impeller, which will allow the SCWD to operate under high turbulent, high back pressure conditions, as well as with lower volume applications. Additionally, the Flow Extender will not reduce your flow.
The Flow Extenders now come packaged with the 1â€³ SCWD. For anyone that has purchased a SCWD without the Flow Extender, they may contact us and we will send one out, free of charge.”
If the fix really works then it would re-elevate our esteem for the little switching current water device that could. We will try to track down one of these little “Flow Extenders” for use with one of the 1″ SCWD and we’ll let you know how performance changes when used with pressurized outlet nozzles.