Hi Alicat
i have one of these hot tubs in my garden and it was here when I moved in. I have rewired and it works great except.. the temperature is floating between 53 and 55 on the therm so the heating won’t turn on and I have no idea what filter I need. Do you have an instruction Manuel for this hot tub and what filter do I need ?? Also does the filter have a cap over it.. mine just has a space for the filter