I bought an octopus 150 skimmer last year. It works great but must be emptied twice a week as there is no overflow container. If you have one of these you know that the catch cup must be unscrewed from the body to empty it = pain in the butt. So I have been trying to figure out how to make this a better mousetrap. Here's what I've come up with drill a hole in the lid on the catch cup just big enough to fit an airhose though - 1/4". Then purchased an airlifter ($12) and a digital timer programmable to a minimum of 1 minute. I have a one end of the airlifter in the skimmer catchcup and the other tube in an overflow container. Everyday the airlift pumps for 1 minute removing the skimate from the catchcup. It works nicely, yeah!