Opening my first pool soon. Doing DIY solar with Solar Bear Fafco dual 4x20ft panels and DIY piping / pump / filter from scratch. I want to do all of this right and get the smallest HP pump I can get away with for electricity cost considerations. Here is the info:
5000 gallons Intex 16ft Ultra
200 square feet area pool
160 square feet solar collector (Portland, Oregon - this ain't Florida or Cali)
214 ft pipe run (including collectors as 80ft a piece)
13ft maximum height at highest point of system
Can be 2" or 1.5" pipe
There will be approximately 134ft of pipe total excluding the collectors. I assume the collectors having 2" headers can be thought of as 80ft of pipe, so let's call it 214ft of pipe total. Total height of the system to the highest point is 13ft. Pipe can be 2", but would probably prefer 1.5" if I can get away with it and the additional HP necessary is negligible.
So my questions:
1) What is the total head of the system? I'm seeing different ways to calculate it online...according to the PVC pipe chart on the forum, 214ft with 1.5" pipe would be somewhere in the area of 34ft of head, where as 2" pipe would give 24ft of head. If that is right, would I then just add the 13ft for a total of 50ft / 37ft respectfully.
2) The 1/2 HP Hayward Super Pump does 20 GPM (nearly double what I actually need, 5000 gal / 8 hours / 60 minutes = 10 gpm) at 40ft of head, and presumably would run a 2" system just fine. However, on their chart, it shows a - for 50ft of head. Does that mean it can't do it? Or just that they didn't test it?
3) Given all of the above, is there a particular cartridge or sand filter kit system that would recommend to run everything just fine? I'm thinking of some of the 12-14" sand filters systems (ie, Swimtime 12" w/ 1/2 HP pump, or the Intex Sand and Saltwater System) on Amazon. Something prebuilt would be nice, but I'm willing to do custom if it will save me money. I kind of lean towards cartridge because I am lazy, but I'm open to sand as well if it saves me money.
4) Ultimate goal is to get pump / filter that works well and has lowest operating costs.