Well, I exchanged the unit (12X) in March and now I'm having problems with the second one. Bulb went out after 5 months, so I went out and bought another. New bulb lasted two days. I have heard recently that power grid brown outs can damage ballasts and maybe this is what is happening here. I really like the design of the Turbo Twist and like the horizontal mounting option. Also like that the inlet and outlet can be offset 90 degrees. This unit is perfect for my system as far as mounting goes. A vertical UV would be a hassle. Therefore, I'm willing to try one more (third one) and this time I'm going to run it off my Noma back-up power supply. But if the third one craps out, that's it...I'm done and will probably go with a Pentair.
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Mark.
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