When to admit defeat and start over?

[Watermom]

Does all this sound about right?

Uhh, no.

We can tell from looking at your numbers that they are bogus. There is no testing that can give you reading to the nearest hundredth (two decimal positions). They do that to make it look so official but basically, it is meaningless for the most part. Then, they recommend that you add calcium to a vinyl pool. Why? Vinyl pools don't even need calcium.

Your pH and TA are fine. Leave them alone. Until you get your K2006 and can test yourself so we will really know what your numbers are, just try to maintain chlorine at about 15ppm. You can use the color chart at this link to help you estimate what 15ppm will look like on your tester since it will actually only read to 5ppm. http://pool9.net/oto-chart/
For reference, in your pool, each quart of 8.25% bleach will add about 3ppm of chlorine. Run the pump 24/7 and clean your filter as needed.

You do probably need more stabilizer but how much depends on what your reading is when you test it yourself. 4 oz. of stabilizer will only add about 5ppm of CYA to your pool. Assuming that your CYA is 29, which I doubt, then that would only put you at about 34 which is still too low. Wait to add any for now.

Once the kit arrives, test and post your numbers and someone here will help you decide what to do at that point.

[CarlD]

One thing to add is that if your FC number is correct, your TRUE pH is probably lower than 7.8, which is good. Watermom has it nailed.

[SpacemanSpiff]

Greetings all.
Our Unicel filters and Taylor K-2006 test kit arrived the other day.
I replaced the filter immediately. Didn't have a chance to test until now.

FC = 3.0
CC = .4
pH = 7.1
CYA = ~38

Note: We feel the CYA test is pretty subjective and depends a lot on incident light.
But we agreed it was around 38 when the black dot "disappeared".
We'll gladly accept hints for performing this test.

We haven't added any chemicals since my last post.
The water is still cloudy, but we can now see the squares pattern on the bottom.

Now what?

Um, just re-read Watermom's post about keeping FC ~15.
We failed.

[BigDave]

Not failed, but maybe losing. Get back on it. Persistence is key.

[SpacemanSpiff]

So, given our new numbers above, is there anything else we need do but get the FC to 15 and keep cleaning the filter?

[CarlD]

Couple of things:
1) 1 gallon of 8.25% bleach SHOULD add about 12ppm of FC to your pool
2) When you measure your FC and CC, use the 10ml line and not the 25ml line. You'll use up your reagents too fast and the .5 measure for each drop is more than accurate enough.
3) When measuring CYA do it the same way every time. I hold it at waist level and face into the sun. Then I spill the solution back into the squeeze bottle and do it again, at least once, sometimes twice, using the same solution until I'm satisfied I've gotten a good reading. The scale on the side is a log scale so halfway between 30 and 40 is NOT 35, it's less. Your guessing at "38" but it may be lower if it's not right on the "40" line.
4) If your FC is 3 and you add a gallon of 8.25% bleach to your pool you'll be (nominally) at 15.
5) You need to check and adjust your FC level at least 2x/day, preferably 3x until what you are fighting is dead. You CAN go a bit higher but may bleach the pool a bit.

[SpacemanSpiff]

Thanks, this helps a lot.
Will report back in a few days.
Hopefully with good news.