I'm looking at purchasing a hot tub for the garden. Anybody any thoughts over UV vs.. corona discharge ozone generators for the water purifying system. I've heard that the efficiency of UV drops after a short while? Thanks Diesel Dave
I'm looking at purchasing a hot tub for the garden. Anybody any thoughts over UV vs.. corona discharge ozone generators for the water purifying system. I've heard that the efficiency of UV drops after a short while? Thanks Diesel Dave
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