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[PoolDoc]

Which cartridges do you have? A, B, or C?

I'm asking, because I'm going to suggest you replace them with Unicel cartridges. The Intex OEM cartridges do NOT remove algae well. In fact, if you have algae, you'd be better off REMOVING the cartridges for now, till all the algae is dead. Leave the pump on, to circulate the water.

[Watermom]

By the way, in a 13,000 gallon pool, one gallon of 6% bleach is not going to get you to shock level. It will only add a little less than 5ppm of chlorine.

[crazy cat lady]

Watermon,

How high should I go? After I add the gallon the reading goes to the bright yellow so according to my kit 5-10. If I go above that I don't get a reading so I have to order the Taylor kit . If you can tell me how high and how much bleach to add I'd appreciate it. Thanks

[aylad]

If your CYA is 0, then your shock level is 12-15 ppm. In your pool, each gallon of 6% bleach will raise your FC by about 4.6 ppm, so 2.6 gallons would get you from chlorine of zero to chlorine of 12 ppm. Until you order the Taylor kit, you can force your kit to read higher levels of chlorine by dilution, as described here http://www.poolforum.com/pf2/forumdi...ater-Chemistry. It's not as exact as the Taylor kit, by any means, but it's a decent ballpark.

[PoolDoc]

I put all the links together in one place for you.

You do NOT have to get the Brute cans, or the TSP from Amazon; you can probably find TSP and some acceptable cans locally. I just included them so you know what you are looking for.

Also, one of my moderators felt I was pushing Amazon Prime too much -- so I'm not pushing it. I included the link because you can get free 2-day shipping with it IF you sign up for their 1 month trial. You will have to remember to cancel it, however. I buy from Amazon a lot myself (we home school, and have been using Amazon for years!), so Prime works for us.

Please note, to get the maximum benefit of the Unicel cartridges, you need TWO so one can be soaking, while the other is working.

Kem-Tek Stabilizer 4lbs

Unicel C-5315 Replacement Filter Cartridge for 15 Square Foot Intex B Filter @ Amazon
1lb Savogran 10621 Trisodium Phosphate (TSP) @ Amazon

Rubbermaid BRUTE Gray 10 Gal Container w/o Lid @ Amazon
Round Brute Lid For 10-Gallon Waste Containers, 16" Diameter, Gray

Amazon Prime

[crazy cat lady]

Perfect Ben Thanks I followed the forums advise and added a 182 oz jug of bleach last night and will test manually tomorrow because that much would be off the chart on my test kit. This morning I brushed not much kicked up the pool is a paler green. The chlorine level was high on the test 5-10 so some stood in the pool. I took out the cartridge as you suggested Ben and it was pretty filthy. I usually keep several cartridges on hand to switch out. I'll do your soaking method too.Now with running without the cartridge would I miss the opportunity to filter the dead algae out? Now just have to locate stabilizer as Amazon couldn't ship for a week and I have zero in the pool. I might have to break down and go to the pool store. Thanks everyone!

[PoolDoc]

Stabilizer is easier to find, then un-mixed dichlor. As far as we know, nobody is messing around with it, yet.

However, I just checked the stabilizer a few minutes ago, at Amazon, and it's available for immediate shipment. Now, that may mean it's available in MY area, but not yours. BUT, you might want to try again.

[crazy cat lady]

Aylad,

I'm thinking 182 oz is not enough I'm thinking I need another gallon to get to your estimate of 2.6 correct??Should be 277 oz. Even though I'm now using bleach and the test kit isn't all that accurate I did add 7 bags of the hth super shock over a 2 week period so not sure what else is in that besides chlorine I'll have to check the bags to see if there's any cya in that. Thoughts??

[Watermom]

Those bags of shock were probably dichlor and if so, they do have CYA in them.

This link to a bleach calculator we use may be helpful to you. It is more than just a bleach calculator, though. If you click in the upper left corner, it gives you lots more.

http://www.poolforum.com/pf2/showthr...18-bleach-calc

[aylad]

1 gallon = 128 ounces. 2.6 gallons = 332.8 ounces. 2.6 gallons of 6% bleach is what will raise chlorine 13K gallons of water by 12 ppm. I'm not sure I'm understanding your first line of the above post?

You'll have to check the ingredient label on the super shock--if it's cal-hypo, it's not stabilized. If it's dichlor, then it has CYA--enough that for every 10 ppm of chlorine it adds, it also adds 9 ppm of stabilizer.