Good to know. I have been able to keep my pool clear all year with the sub-par filter that came with it, but I want it as clear as the pics I see on here, lol. I couldn't pass it up at 129.99! In fact, I ordered one for a neighbor, who I am working on converting to BBB. he had mentioned he was looking for a filter for his smaller Intex, and I looked up the filter to tell him about it and saw the price drop. He was checking at the PS, and I didn't want him to pay more for a filter than he did the pool! I just wanted to make sure it was enough for the 18 foot Intex, it doesn't really say on WM's website.