sand or what

[happyjack]

what type of filter do you think I should get for a 33 rd pool

[BigDave]

It's really a matter of personal preference. My choice: an oversized sand filter. Bigger filter = slower velocity through filter = better filtration. This is true for every type of filter. Think: bigger filter, smaller pump and you'll have much better results than small filter, big pump (common sales push).