Hey guys. I’ve had some equipment that has been sitting on my patio for some time that I decided to try and clean up to reuse. The equipment is a couple of powerheads and a 17 gallon tank. So I cleaned them up with a pressure washer and placed them in the tank with RODI water and vinegar and let them run for a few days. Today it looks like this. It looks like mold is growing on the powerheads. Did I do something wrong?


