Anyone know very much about Pentair sand filter varieties or have any of these? I am buying equipment for a new 34k gallon DIY pool, and planning the plumbing is the trickiest part for me so far.
1) BARGAIN OPTION: Pentair Sand Dollar SD80 is $350 75gpm/3.5sq ft (this is $100 less than I paid for a new 24" Sta-Rite 3.1sq ft/70gpm which I plan to return today because iI think it is possibly too small for my 34k gallons and Pentair VS Superflo pump's head curve on gpm)
2) MIDDLE GROUND: Pentair Sand Dollar SD80 with Clear Pro technology is $460 75gpm/3.5sq ft (some threads I read on here sound like the Clear Pro feature is worthwhile? Maybe if I don't ante up for the BIG 4.9 sq ft (for $400 more by the time I buy valve, etc), this would be a worthwhile choice??
3) BIGGER OPTION: Amazon has listed: "Pentair Triton C High-Capacity (Residential) Side Mount (no valve or unions) is $593 98gpm/4.9sq ft", but I cannot find anything about it on Pentair's website. I don't know why it is marked "residential" whereas the other TR100's I have priced seem to be labeled 4.9 and 70 gpm, and also seem to be more expensive. I am interested in the big jump in sq ft filtration area and side mount (a plus if I stick it under the deck), but I'd like to know if Triton C actually stands for commercial and why the residential unit would have higher gpm. If this is some mistake, I am also interested in the Pentair TA100, if I could just find it at a great price.
I'm also interested in opinions on plumbing. I will have one skimmer downwind of the prevailing SSE winds (still debating a standard Hayward above ground model that would be easier to install against larger in-ground outside-mount, especially if experienced plumbing folks tell me the extra inches on its weir-opening make a significant difference in intake capacity???). I am planning to have 2 returns. My tentative plan is 2" pipe from skimmer to pump, and 1.5" pipe to the returns. Does this sound right? If I attach a sketch of where I'm planning to place it, is anyone interested in helping me figure out placement pro's and con's?
Thanks in advance!