Im going to need a new liner next year or year after an instead of the constant need for chlorine and chemicals i was pondering buyig one f those Nature2 systems. Copper is great at keepng algae away. My problem is i was using copper algaecide ans stained my liner something aweful. Aside from that its faded bad. My 18 x 34 above ground pool is in direct sun all day. Its 12 yrs old original liner. Just wanting to know if anyone on here uses them and has had great success. thanks