Drain and refill 33,000 gallon gunite pool

[CarlD]

Once you get the K-1515, you'll probably never use the DPD test in the K-2005 again. And, just to reinforce what 'Mom said: The ONLY difference between the K2005 and K2006 is the FAS-DPD Chlorine test, and the K-1515 takes care of that for you. It's only about another $20. Also you should have a GOOD OTO test kit. Leslies should have one that uses Taylor reagents and measures to 5ppm on the chlorine side, and uses R-0014 on the pH side. If so, this is the same as the Taylor K-1000, which, IMHO, is the best OTO kit you can buy--and the Leslies kit is the Taylor kit in a Leslies box.
Also, if you are testing CYA often, see if Leslies has the CYA reagent: R-0013 and if they have it in a larger size. I buy it in pint bottles, myself.

I actually have the Leslies version of the K2005...but that's because I have about five different "Service" kits of various types, numerous OTO kits, various single tests, including FAS-DPD, CYA, Salt and Copper.

Carl

[bugsy0329]

I am about to call a sand truck to fill in the pool. I have been battling green water for over a week. Except for chlorine (which I didn't test b/c I have been too lazy to buy the supplemental kit), everything is in line. ph-7.6, ta-100, ch-100, cya-40. I have scrubbed and added bleach almost daily - 5 gallons at a time. The water is grass green. Oh, yeah, we're hosting a surprise party Saturday. HELP ME PLEASE!

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I am going to add more stabilizer, too.

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Added 12# stabilizer. Water is beginning to clear near steps. Maybe I panicked for nothing?

[Watermom]

I have been battling green water for over a week. Except for chlorine (which I didn't test b/c I have been too lazy to buy the supplemental kit),

Can't be lazy with a pool or you'll continue the green swamp cycle! Good luck getting your pool clear. Follow Jan's advice and hopefully your pool will look pretty good by Saturday.

[bugsy0329]

Tested for FC. It is zero. CYA is 60. Should I shoot for 15 gallons, or 20 (just to be safe)?

[aylad]

In 33K gallons of water, 11 gallons of 6% bleach should give you approx. 20 ppm of Chlorine, which is where you need to be to achieve "shock" level for a CYA of 60. After you add that initial dose,and get to 20 ppm, you need to test and add more chlorine as often as possible to maintain that 20 ppm level--that means in a pool your size, each 1/2 gallon of bleach will raise your FC by 1 ppm, so when you retest, add whatever amount of bleach you need to get back over 20 ppm. You need to hold it at or above the 20 ppm mark until it clears up and you are not losing more than 1 ppm of chlorine overnight. This is a process, not a one-time thing. The more consistent you are about maintaining the 20 ppm, the faster the pool will clear up. And...if you're planning to have a pool party this weekend, you're going to need to be very consistent about it if you want to be able to use the pool. Keep your pump running 24/7 while you're doing this, cleaning your filter as the pressure indicates, and brush the pool at least once a day.

Good luck!!
Janet

[famousdavis]

But if you haven't bought the chlorine test kit as previously advised, how else can this forum help you?

[aylad]

Five gallons of 6% bleach in 33K gallons will only raise your FC to 9.1 ppm. With a CYA of 40, your shock level should be 15 ppm. So...if you'll add enough bleach to get your Cl at least 15 ppm, and hold it there (which is going to require testing and adding more bleach to maintain at least 15 ppm), the pool will clear. If you're only keeping the Cl around 9, you're wasting both time and bleach. In your pool, each 1/2 gallon of 6% bleach raises your Cl by 1 ppm, so you can use that to figure how much to add back each time you test. Once your stabilizer dissolves, and the CYA goes up, so will that shock value. Bur for now, if you want it to clear, get the chlorine level up where it needs to be, keep it there by testing and adding more chlorine as many times during the day as possible, and keep your pump running 24/7.

If you added 12 lbs of stabilizer, then your CYA is about to go to up roughly 80 ppm, so that shock level raises to 20 ppm. If you haven't completely dissolved it yet, I would pull the remaining stabilizer out (or backwash it out if you put it in the filter) until you get the pool cleared, and THEN raise it back up to 80 ppm.

You can clear the pool by Saturday, maybe not to sparkling but at least to okay for a party, but it's going to take a lot of bleach and a LOT of consistency on your part.