Pool newbie here. We recently had our pool pump go out, and I have been in search of a new one. The pump we had was a 1.5 HP pump, however, sometimes I felt like it wasn't moving water like it should. Anyway, I'm desperate for a pump, since the water is getting worse, so I found a used pump on craigslist. The one I found appears to be decent for the $100 price tag, especially if it will get this water cleared up. My question is this - Can my system handle the extra .5 hp?
The return fills the hot tub, which in turn waterfalls into the pool. Does this add to my feet of head? Below are pictures of the setup and the pertinent numbers that I worked out.
Pool Dimensions (Kidney Bean)
Length - 37 ft
Short - 10.8ft Long - 17.3ft Total = 28.1ft
Depth Avg - 5.9
Head - Skim 1 - 13ft - Main - 17ft - Avg - 15ft
Capacity - 20,733 gallons
?60sq ft? (not positive)
Spa Dimensions (Round)
Diameter - 8.6ft Depth - 3.5
Capacity - 1,537 gallons
Waterfall - 3.9 ft of fall
This is where it gets tricky for me. I read that for a medium flow on the waterfall, I would want to 1500 GPH per foot of waterfall. 3.9 X 1500 = 5850 GPH or 97.5 GPM, for a total of 143.875 GPM! It said I could use 1000 GPH, per inch of fall, for a lighter flow. This leads to an additional #though slightly more reasonable) 3.9 X 1000 = 3900 GPH or 65 GPM for a total of 111.375. Could this be right? On my notes I wrote down and circled what I thought would be my required GPM, = 46.375 for pool - 45 for the falls - total = 91.375 GPM. Am I missing anything? Can my system handle a 2 HP?
Cant read all of this, think it used to say 60 sq ft...