sinkorswim

I have used three different popular brands of pH testing strips to check my pH level and I keep geeting a reading ~ 7.2-7.6. I took a water sample to my local pool store and they tell me my pH is ~7.2 and they repaeted the test twice. Now I took a water sample into work and tested pH with a acid/base titrator which gives 6.72 avg. Now testing my water at work is nice but, now how do i trust the other readings I get using these test stips??

Great news. i was very strongly leaning Pentair 1 HP, WFE-4 full rated ENERGY EFFICIENT over the standard FW. There isn't a big difference is there, other than cost? Thanks also about the filter, the cleaning was a pain with the DE, but i think it was more or the amount of water lost in back washing. The filter will help our water bills a lot. How did you determine what size (sq ft) of filter our pool needs? I have looked and asked many people but not one person or store could show me a chart or give any calculations used, so how did you do it? as for the Dolphin, the wife wanted a young stud poeple guy to mainatin the pool, so the cash for the cleaner was a no brainer

Sorry missed those points. Our current system HW DE EC-65 w/HW Maxflow 1 HP pump all about 10+ yrs old, best guess. Filter and pump are about 10-12’ from skimmer and ~18” off water level and in a shed by the pool. 20 x 40 x 8(deep end), vol 35K gals with a DTH of 50ish, yes?

Pool is ~15+ years old; we only have one 230V line into the electrical box and used for heat pump, so we only have 115V for pump/motor. Pool has one skimmer and two inlets, all plumbing lines are 1.5”. We are using an in-line Hayward (tablet) chlorinator and heat pump. There is an additional inlet on side of pool, I think it is for a pressure cleaner, we have a Dolphin auto cleaner (in love) so that inlet will never be used, can we use this as an additional inlet? We are tired of the DE maintenance (in our 50’s) so our pool guy said a cartridge system would be best for our needs. The pool is not used much (mostly weekends, if that) so we want to confirm his recommendation for size of cartridge filter and HP for pump. We’ve been looking at Pentair WF and Hayward Northstar pumps but are not set in stone, I also understand the need of “+ one size up” when it comes to the filter. Need to know what size cartridge (sq ft) and what size pump (115v) will work with our pool and new filter. I'll get into models after i pin equipment down size.