I really like what I have and there is 3 of them. they have worked for 5 or 6 years. Paid good money for them. How would I hook a membrane type onto the gravel filled sinking bases I already have? is membrane type supposed to be superior to my style? i would consider it if I knew more about it. Thanks

Dear Alcohol, We had a deal where you would make me funnier, smarter, and a better dancer... I saw the video... We need to talk.