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  1. J

    Help with identifying heater assembly

    I have a 2017 Sundance Chelsee (780 series) wired for 240v/60a. My GFCI started tripping which I narrowed down the heater (doesn’t trip once I disconnect the heater). It’s a 5year old hot tub, so I’m planning to just replace the whole assembly. But I am looking to confirm the exact replacement...
  2. J

    Thoughts on plumbing install?

    Hi there, With the help of this forum I upgraded my pump and filter this season (Hayward Tristar VSP and 400sqft Cartridge Filter). The plumbing right now is dry fit and I wanted to check to see if there were any issues that should be corrected before gluing. A few notes All original plumbing...
  3. J

    Optimal pump/filter option

    22k vinyl pool, in-line SWG, 1.5” plumbing, located in MA and replacing my 3/4 single speed pump and sand filter filter this spring. I have a main drain and skimmer with two return jets. No heater. I’ve narrowed down my pump/filter options to 2 and am looking to optimize. Budget difference is...
  4. J

    Finally replacing filter, advice needed

    hi all, I live in MA and have a 22k vinyl pool with SWG. Currently have a 25 year old 2” sand filter with 3/4 hp single speed pump. 1.5” fittings. Valve broke on the filter so I’m using that as an excuse to upgrade the pump and filter. I’m looking at a variable speed pump, likely doheny’s...
  5. J

    Is my PH logic correct

    Hi there, I have a 400 gal Sundance Chelsea SWG. I'm pretty good with chemicals but am experiencing a very frequent need to add MA to lower PH. Between uses, the PH consistently creeps up to 7.8-8.0. Am I correct in thinking that I should lower my TA to around 60 to slow the PH increasing? I've...