size of pump needed for Hayward S160t sand filter

I am wondering if anyone knows what size motor (pump) I should use for a Hayward s160t sand filter. When I bought the house, the pump worked the first year and then crapped out. The labeling on it was so sun baked, I could not read anything. I knew it was 120v circuit, so I just bought the largest pump that would run on that circuit (1 and a half horse). I have not been able to get crystal clear water since. I just replaced the sand in the filter and there was only about 100 pounds in it, I found several pool sites that said it should have 150. Also 150 brought it right to the top of the clam shell. Well, when I first backflushed it, it shot a bunch of the sand out the waste. I'll bet it's down to 100 lbs. again inside and I still can't get clear water. Any help appreciated!
 

JohnT

Admin
Mod Squad
TFP Expert
Apr 4, 2007
9,471
SW Indiana
Welcome to TFP.

Your pump is way too big for your filter. You probably need a 3/4HP pump.
 

Bama Rambler

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2009
22,964
SouthWest Alabama
We really need to know more about your setup to give an accurate size but I'd bet John is real close and he might still be on the big side.
 
I have a 32' by 17' in ground pool. Cement or Plaster, not sure, it's an old pool. It is only about 2 and a half feet deep in the shallow end. I can sit down and still have my shoulders and head above water. Of course, I'm 6'3". The pool is only 6 feet deep in the deep end. I can stand flat footed and it almost covers my head. Nearest I can tell, it is about 12,000 gallons. I determined that with a calculator I found on a pool site. It has one drain pipe and one skimmer (2 and a quarter PVC) and two return to pool valves. Anything else you need.
 

Bama Rambler

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2009
22,964
SouthWest Alabama
The 3/4hp Super Pump looks like it would be a good fit for your pool and wouldn't overtax your filter. The 1/2hp would almost do it but I think it'd be too close for comfort.
 

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