I use it from time to time on the air inlet to my skimmer pump. I have the 250 model with the little beads that turn from dark purple to pink and I notice when I hook it up, and the beads are fresh from the oven, that the foam in my skimmer multiplies. Can someone with experience splain this to me? I know it removes the humidity from the air, but what is the benefit of dryer air? And no I don't use a Ozonator, I've heard horror stories of people screwing up the water chemistry with them. Thanks in advance.