Yadamco Posted October 14, 2021 Report Share Posted October 14, 2021 I got a used tub and I have one question, in picture attached the white circular ring at bottom of tub has a 3/8 hose on it. Does anyone knows where it goes as its not attached to anything . Or what's it for ? Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted October 14, 2021 Report Share Posted October 14, 2021 It also has a 3/4" hose to it, right? The 3/8" line is likely an ozone line, and should loop above water level before the check valve and then connects to the ozonator. I do not recommend this type of ozone injection, as it damages the cover. 2 Quote Link to comment Share on other sites More sharing options...
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