My sand filter sucks, new filter options?

[li34436]

I have the same problem. I have owned an above ground 33' round pool for a year. Everytime I got it blue, it would turn green in 2 days.Spent hundreds in pool chemicals. I finally, finally...changed the pool sand and added a sand cleaner. Pool was blue and stayed that way. I was very diligent on testing,chlorine levels ect. I live in south GA.

Over the winter my electric line was cut. No pump for a week.Pool was greener that green. Took me a week with chemicals no my pool is blue. BUT, My filter is still blowing out green. I changed the sand twice! The green is not as dark as it was, but it is noticable. It will blow out green for a second then blue. I use both the backwash and rince cycles. I have been putting a hose when I 1st start the filter back up, in front of the blow out to get rid of the green. I put CYA last season, I think I need to put some more.

Pool hold aprox 25,000 gallons water and pump takes 4- 50lb bags.

Does anyone have any other ideas?

Thanks,

Lisa

[CanuckPool]

HI Lisa, sounds like you have to post some numbers

FC, TC, CC, CYA, pH?

[CarlD]

Yes, you must post numbers. You cannot fix a sick pool without testing the water.

You're going to need to keep your free chlorine at shock levels, maybe for as long as two weeks. If it drops you will back to square one. You cannot do that without a proper test kit.

We have lots of stickied threads on how to do this. Please read them.

[li34436]

Hello,
I had taken my water sample down to the pool place. They said all my levels where fine. But, I may want to increase my chlorine level and to get some CYA. So I did that yeasterday.

Before putting that all in, the green in my return has gotton worse and the pressure in my pump is now down to 5 where it was up to 9 or 10 2 days ago.

I am getting new gaskets, where the clean out is, if you turn it just a little the pressure goes up??? I think from changing the sand a couple of times already the gaskets may be bad. I am going get new gaskets, more sand, the Aquachem sand cleaner and DE?, I think it is called to increase pressure. I hope this works. I am getting fustrated. Although, my pool is still clear, Thank you Lord!!!! If I don't ask fast it won't be.

Do you have any other suggestions?

Thanks a Bunch,

Lisa