Ok just got the index pool filter. have been using the cartridges for 2 years last year it never got clean enough. After getting the sand filter it's been nothing but problems. I ordered the part was to go on the bottom of the old basket that I could hook the new filter up to. But it was too small. My husband bought a part and we're now connected. But the lid to the skimmer basket on the sand filter has two pieces 1 lid and the thing that screws it down. But since running it it seems that the top clear piece is not fitting because if I push down on it water comes out and as it pumps it seems to gain suction and then lose suction causing the leaf trap to fill up with water and pour out through the lid. Never seen it having two pieces. Just wondering if anyone knew how to stop this from leaking from gaining and losing suction. And if there's a way to post a video please let me know how and I can show you.