Not a hydraulics person but would that explain refill??? The responses I requested were from spa people, not you, btw. Was looking for their expert input, not as a criticism of you!
BTW, like your pic on your profile! Make that your avatar or better yet a pic of the pool and spa. Signature too? Here's mine for guidance: 26K gal 20x40 rectangular IG vinyl pool; Apr 2014: New pump, liner, auto-cover, & water; Pentair Whisperflo 1HP pump on 24/7; Pentair Trition sand filter; Cover/Star CS-500 auto cover; Taylor K-2006, OTO
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