Frustrated

Cl 10
ta 100
ph 7.6
cya 55

A FC of 10 is not high enough to clear up the green--with a CYA of 55 you need to have it consistently at 20 ppm. The more it drops, the longer it's going to take to clear up. Also, you said you "didn't lose much chlorine" overnight--how many ppm are you talking about in loss?

If the white in the bottom of the pool is crystals, then it's not water mold--I think it's probably undissolved cal-hypo that's been sitting on your liner all this time, since it's really difficult to pre-dissolve it. Vacuuming to waste or to filter is the only way you're going to get it out of the pool.

Get your chlorine back up to 20 and hang in there!

Janet

but every time I add chlorine it just sits at the top of the water. it does NOT dissolve slowly like in previous years. this is the first year that I am experiencing this problem

Slimy goey gunk float to the surface???????? I appreciate any feed back. it does happen every time I shock the pool using liquid bleach.
or even by adding anything else. What is it, what caused it, and how to get rid of it. Thank you

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Unless your Calcium Hardnes (CH) is low, you shouldn't be using Cal-Hypo anyway. You didn't report your CH number -- do you have a good test kit such as the Taylor K-2006?

Cal-Hypo often has trouble dissolving well and can be pre-dissolved in a bucket of water first before adding it to the pool. However, it would probably be better for you to be using either chlorinating liquid or 6% unscented bleach instead.

I would switch to bleach, that will stop the problem of it floating to the top. What is your CH? It's entirely possible that the CH has gotten so high that it just won't dissolve anymore.

Are you pre-dissolving it in a bucket of water before adding it to the pool? Have you tried pre-dissolving and then adding it through the skimmer instead of straight to the pool?

Janet

Ah, Chemgeek, we posted at the same time.....but at least it's proof that the advice is solid!! :)

I have merged the pertinent info from the other two threads into this one, to make it easier to keep up with for the people attempting to help. Please continue on this thread! Thanks,

Janet

My CH is at 100. I HAVE been using liquid bleach for the past 4 days.

I can sense that you're really frustrated with this, and believe me, I understand why. We ARE trying to help!!

Is your filter capturing any of this stuff? How fast is your pressure rising and how often are you backwashing it? Have you tried the "adding DE to your sand filter" trick?

This is just an afterthought, but have you added any Baquacil, Soft Swim, Pristine Blue, or other PHMB chemicals to the pool? What did you add to it when you closed it before the winter?

Janet

thank you for your patience. yes this has been very frustrating. the SAC is 5 ppm. the ph is 7.2 , the PA is 110, SH is 180, the CYA is 40 . The chemicals I have used recently is liquid bleach and hydrofloc. Yes I did the DE to my sand filter with very very slight results in terms of water clarity. My Calcium hardness is 180 which is low. It should be anywhere from 200-400 from what I understand. I have backwashed it 3 times in the past 5 days. I have not added Baquacil, Soft Swim, Pristine Blue, or other PHMB chemicals to the pool.