Taylor Fas-DpD Test Kit K-2006

[hvactech2]

Hello,

I'm somewhat new to this forum, so please excuse me if this question is redundant. I have an issue with CC, when I use the powder(R-0870) the sample turns slightly pink, I then add the R-0871 drops and it starts to clear then slowly changes back to pink and then stays there. This makes it hard for me to get a FC reading, I really don't want to rely on the pool store readings. Has anyone seen this before?

[CarlD]

Have you been able to establish what your chlorine level is in your water, even if you have to use an OTO measure for total chlorine? It sounds like you don't have much chlorine. What happens if you use two scoops instead of one of your powder? Is it better?
I'm a little baffled. Can you give us your other readings?

[hvactech2]

Well, here's what has happened, after this original posting I went out and shocked the pool with roughly 30+ bags of Burnout 3 per the pool store as they felt I had a "chlorine Lock". At that time my readings per the pool store were:

temp-74
saturation index .8
TDS 900
CYA 31
Tot. CH 6
Free CH .7
Ph 8.4
TA 135
total hardness 199
Phosphates @ 500 PPB


After I super chlorinated most of yesterday, I awoke this morning and took the following readings:

Fc 5.2
cc .4
TA 111
Cya .....lower than my test would register
CH 250
Water temp 74
Ph 7.1
S/I .4


The pool is still cloudy, I believe there is dirt still on the bottom but I cant see it to clean it properly. By the way the pool is 20x40 I/G w/ vinyl liner.

I have spent so much in chemicals already and the season is just begun.

[Watermom]

We don't allow duplicate threads so I deleted your other one. There is just as much traffic in this section of the forum; it's just that today there hasn't been a lot cuz everybody must be celebrating Memorial Day!

What is the ingredient in Burn Out 35? Your readings are all over the place. Did you add anything else? That is quite a drop in pH. What kind of filter do you have and what size of pump?

[aylad]

You'll spend a whole lot less if you'll stay out of that pool store. There is no such thing as "chlorine lock"--rather, you shock your pool to the chlorine level that is determined by your CYA level (see the link to the best guess chlorine chart in Watermom's sig for more information on that). You can shock the pool with plain, unscented bleach for a whole lot less than you paid for the "burnout", and without adding any extra goop to your pool to create more problems (if it's cal-hypo, you're adding unneeded calcium..if it's dichlor, you're pushing your pH way down and adding stabilizer.)

[hvactech2]

I'm sorry, also it's Burn Out 3 my mistake....57.8% cal hypo 42.2% other ingrediants. I have a 300# sand filter with a 1 H.p. pump with 1.5" piping. I dont know that the pool stores readings are that accurate....three days ago I did add the phosphate remover per the pool store.

[PoolDoc]

Phosphate removers will cloud the pool for the long term -- don't look for it to clear up quickly!

Do you know what your CYA level was last fall? You reported 31 from the pool store, and unreadable using your K2006 -- was the CYA sample CLEAR, or just not hazy enough to give a definite reading?

What I'm asking about is this: bacteria can degrade CYA over the winter, often to something that's not a problem. But occasionally, CYA will be degraded to ammonia, which consumes HUGE amounts of chlorine during clean up. We've been seeing a LOT of those 'occasions' this spring.

[aylad]

I would most definitely trust K-2006 readings over the pool store. The phosphate remover was almost certainly unnecessary, and only really accomplished emptying your wallet a little further. When you run the chlorine test with the K-2006, try using the 10 mL sample, where each drop counts as 0.5 ppm, and see if that's any easier for you.