Need correct info regarding Pump size and filter size for AG pool

[redhorse]

I have a 18x33 Oval pool around 14,500 gallons.
My 2HP motor went down and I have a 22" sand filter. Question is to replace new motor could I go with a 1 Hp or a 1 1/2 hp.
If I wanted to replace both could I go with a 18" filter and a 1 Hp motor?
Not sure how much water I need to be moving GPM? I was told about 30 but not sure.

 

[pwrstrk]

Welcome to TFP !
I would keep your present filter and go with a 1 HP 2 Speed pump. The Hayward Power Flo Matrix is a very good pump. Lots of folks on the forum use it along with myself. You would save a lot in your electric bill by running the pump on low speed 90% of the time.

 

[jblizzle]

Welcome to TFP!!!

For a pool your size, I would not go smaller than the 22" sand filter. I agree a 1HP 2-speed would be a good pump for you.

The flow rate really does not matter. Check out: Determine Pump Run Time

And please add your location (City, State or City, Country) to your profile and pool details to your signature as described HERE as it will help us help you.

 

[redhorse]

OK, ordered me one, thanks.
I have had a couple local pool shops tell me that a 1HP is not strong enough for my pool. They may just be trying to up-sell me. I guess I will find out.

 

[jblizzle]

Pool stores and builders always seem to sell pumps that are too big and filters that are too small ... a horrible combination.

 

[n240sxguy]

They apparently think the water needs to churn instead of just circulate. They want you to have an 18X33 whirlpool tub.


Sent from my iPhone using Tapatalk

 

[redhorse]

Pool stores and builders always seem to sell pumps that are too big and filters that are too small ... a horrible combination.

Yep, I assumed that was the case. Thanks for your assistance.

 

[redhorse]

OK, I just want to confirm that the 1HP 2 speed will be strong enough to circulate the 18x33 oval pool especially the opposite end that tends to develop algae in the heat of summer.

 

[pwrstrk]

Yes it will be fine.
Make sure your FC is range for your CYA level to prevent algae. Brushing the area that has seen algae if it gets poor circulation will help greatly also. You can also run the pump on high speed for an hour to help out.

 

[redhorse]

Wow I just installed it, this thing on high is moving water a whole lot better than my 6 yr old 2 HP and a lot quieter. Thanks for the suggestions.
Now time to get the levels all straightened out.

 

[pwrstrk]

Glad to see your happy with your purchase. You won't regret it. It's a top notch pump. It will move some water on high. Nice job !