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The DONT last if you abuse them: I found this out. They are designed with bigger to smaller "holes" as you described, so that the water first goes through larger micron openings, eventually down to 1 micron. With these, you cannot use enzymes, clarifiers, even stain and scale products. They "gunk" up the pores, and cannot be washed.
I don't consider that abuse - that's my point. Unless you don't soak often I can't see a filter with a very small micron opening lasting too long.
I've got one of the little people working on it. Terminator
Ooompa Dooompa Oooompady Doo.
Their claim is that you dont NEED clarifiers/enzymes with those filters. Why the Stain and scale stuff is a problem, still a mystery to me. That being said, I'm going to see how it goes with a traditional pleated filter for now, since I dont want to be limited in what I can use in the tub. This was an interesting thing that a rep from Micropure sent me in regards to my high calcium question:"Stain and scale reducer will hamper the filters effectiveness as well.Our desire is to see less chemicals in spas, so I would recommend notadding any Defender to your spa. The only sacrifice you are making isshortening the life of your heater element and Arctic Spas uses aspecial coating on their element to reduce scaling anyway. Heaterelements cost about $60 and you can easily put $60 of Defender in yourspa over a few years. Plus then you will be exposing your body to thestain and scale remover (see attached spec sheet)."Guess i sorta took this thread off course- sorry.
Avoid Tri-x filters.
My filter is 50sq ft. Seems that some are as little as 25, and as much as 125? Are the "denser" ones harder to clean and riinse well?
Spatech- thanks for the advice, but I really love your avitar!!! LOL!!!!! That is new, right? Please dont tell me I have just been unobservant lately......