Filtration problems / pump size

[PoolDoc]

1. Your pump IS too large.
2. A properly operating sand filter may be stopped up by heavy algae quickly. That is a GOOD thing: it is filtering out the stuff you want out.
3. You'll probably get longer filter runs if you KILL the algae with repeated late evening applications of bleach (2 - 3 gallons of 6% bleach each evening, till all the green is gone)
4. Depending on which model Hayward pump you have, it may be possible to replace the seal, impeller, and diffuser with parts for a 1HP or even 0.75HP pump. This will reduce flow AND electrical consumption.

[thedubb]

Thanks. I just didn't think it should get stopped up that quickly. If I can't retrofit the pump I'll probably buy a new one. Most sites don't list any GPM rating for their pumps, very frustrating. I'm with you and think a 3/4 hp will be more than sufficient. The 1.5 I have is probably why the filter assembly and valve had to be replaced. Are there any health concerns with using bleach in place of shock?

[thedubb]

Sorry, one more thing. After adding the bleach or shock should I leave the pump running or shut it down for the night? I've been running it 24/7 to try and get this cleared up.

[PoolDoc]

It's common for AG kit manufacturers to oversize pumps, because pool purchasers naively assume that more HP = better performance. And, it's cheaped to increase pump HP than it is to increase filter size.

[mas985]

Do you have a model # for your pump? Not all 1.5 HP AG pumps are that "large" and most are smaller than 3/4 HP IG pumps.

[CarlD]

Sorry, one more thing. After adding the bleach or shock should I leave the pump running or shut it down for the night? I've been running it 24/7 to try and get this cleared up.

Keep the pump and filter running 24/7 till it's back to normal.