Algae gone-water still not clear

[aylad]

CYA of 120 is still way too high--you need to strongly consider another drain/refill. And with your Cl test, you need to try diluting your test sample with distilled water 1:1, read your result, then multiply by 2. If that's not high enough, you can dilute it 1:2 and multiply by 3. Either way, you need to make sure that you're still maintaining high enough chlorine levels for that high of a CYA level.

Are you still running your filter 24/7? What are you using for shock?

Janet

[karenkr]

Thanks for answering me.

New test results:
Chlorine: 10(had to dilute)
Ph: 7.5
TA: 130
Cya: 130
Yes we run our filter 24/7
Sure hate to drain pool again but will if it is last resort.
Chlorine seems to be holding at 10. Should I add more bleach. Right now that is all that I am using. Do I need to add anything else to the pool besides the bleach.

appreciate your help
Karen

Forgot: still cannot get hardness to register. Does that mean way to high or low?

[aylad]

If the cloudiness is dead algae, Andy is right on the money--give your filter some time to clear it. If you still have a green tint to the water, you need to shock it for a little longer--and with a CYA of 130, you need to go to 25 ppm. 10 ppm is only enough to maintain clear water after you get it cleared up.

Janet

[karenkr]

I am going to add bleach tonight to bring the level up to shock again in case there is any lingering algae. The water is blue --with no signs of algae and the bottom is starting to re-appear.

If I add clairifier what kind can I add? I wondered about adding some but was afraid too without checking with you guys

Thanks
Karen

[drband]

What about adding a little DE (diatomaceous earth) to your sand filter? It can do the job of final filtering of that cloudy haze. (I'm guessing you have a sand filter.) See what some of the senior members think about this... the DE might really take care of this without adding clarifier, then when you backwash, you'll wash it all out of your filter, DE and all. (ONLY WORKS IF YOU HAVE A SAND FILTER) By the way, there are several postings that explain how to do this correctly.

[duraleigh]

Adding DE and/or clarifiers (or some other "magic" chemical) probably works well sometimes and sometimes not.

Most importantly, I think it tends to mask what was wrong with your pool to begin with.

If your filter won't clear your pool, it's not doing it's job.

If you have lingering algae conditions in your pool, DE or clarifier or anything other than CHLORINE (well, almost) will not remove those conditions.

The forum's philosophy has always been simplicity and I think you start to get away from that idea when you "trick up" your equipment or your chemistry.

For those of us that are long-term on this forum, have you noticed that CHLORINE seems to cure about 95% of pool water issues? It certainly seems that to me.

So, to Karen's issue, I think Janet and Andy's thoughts on continued use of CHLORINE will cure the pool. It is probably the one true "magic bullet".

[drband]

Exactly right. I did not advocate doing this in place of holding the CL at shock level. My experience w/ my own sand filter is that DE sometimes makes it more efficient at filtering very fine particulates from the pool water.

Shock level CL is the key to getting rid of algae (killing it).