Chlorine Lock ?

[PoolDoc]

Get the OTO / phenol red drops kit, preferably the HTH 6-way (made by Taylor), but if not available, get a cheapo 2 bottle model. OTO is not very accurate but it's VERY reliable, can covers the entire range from 0 - 60 ppm.

Stop using BioGuard products -- they are among the worst about adding mystery ingredients that will screw up your pool. A BIG part of our approach here is to use ONLY known chemicals, and ONLY when there's a clear and specific purpose for doing so. We recommend the "add some and see if it helps" approach very, very rarely.

That's why we steer people to no-name commodity products that are simple, undiluted and unblended.

[mjsboone]

Our pool is looking better this morning. More clear. Attempts to find a test kit failed yesterday. Pool supplies seem in short supply in South Carolina in the dead of summer. Can't quite understand that, but I will persevere today in the hope of finding-otherwise will order from Amazon. I tested the water this morning with the test strips and the results were: chlorine 0, free chlorine 0, and ph 7.4. If I understand your directions clearly, I should continue to add 2 gallons of bleach every night until the testing the next morning show that the water is holding the chlorine throughout the night. Is this correct? I hope to have the good kind of test kit today. Wish me luck on my quest! Thank you for your guidance!

[Watermom]

If you are registering 0 chlorine this morning, you don't want to wait until evening to add bleach. Go ahead and add it now if you don't want your pool to turn green!

A pool store should have an OTO kit. Just don't let them talk you into buying anything else while you are there. They will try! But, even after you do get a cheap OTO kit, you still should order a K2006. That kit will not be available locally and you will have to order it. (Link in PoolDoc's post above.) If your pool store happens to have a K2005 don't buy it. Not the same thing and not what you want.

[mjsboone]

Is all this bleach hurting my liner? Also, if I am seeing the pool look clearer this morning, it does not mean that things are improving? I will add the 2 gallons of bleach now although I am cringing. I have got to hang in there and get this problem solved! Thanks for your guidance-again.

[Watermom]

If you have no chlorine in the pool, the pool will turn green. Plain and simple. And, it doesn't take long before algae starts.

Bleach is 8.25% sodium hypochlorite. Pool stores also sell liquid chlorine. It is either 10 or 12.5% sodium hypochlorite. The same stuff only more concentrated. People do not hesitate to add pool store chlorine but when they hear the word 'bleach,' they get scared. If you wouldn't be afraid to add pool store chlorine, then you shouldn't be afraid to add bleach. (In all the years I have had a pool, I have never used anything but bleach for my source of chlorine.)

Those gallons of bleach aren't actually gallons but rather they are 121-oz jugs. In a 23K pool, adding two of those jugs is only going to take your chlorine level up to a little less than 7ppm which is not all that high. Nothing to worry about at all.

Test the water again this evening and repost with the numbers. It is likely that you will need to add more bleach this evening as well. And, go ahead and order a good kit ASAP using the link Ben gave you so you'll get it as soon as possible.

[PoolDoc]

It's very unlikely that you'll be able to buy a K2006 locally. I've encountered exactly one case of a pool store stocking that kit . . . and hundreds that don't. It's hard for pool stores to get excited about a test kit that is, fundamentally, designed to put them out of business.

Please go ahead and order one. You're going to end up in real trouble without it.

[mjsboone]

Good evening! Just tested the pool with a new basic testing kit (have to order the "good" one). And here are my numbers after putting in 2 gallons bleach last night and 2 two more this morning. Chlorine is almost non existent at the 0.6-1.2 and ph is 7.6. We added 2 more gallons after the water was tested. I will test again in the morning to see where it's at. Any other suggestions at this point?