green pool- Ch 0 help

[PoolDoc]

Sorry, Kelemvor -- I should have refreshed the page before I posted.

[poolpatty]

I redid tests this am--yesterdays number for CYA had to be wrong . Think I need new glasses.

The CYA is 90 , which sounds correct, because it had been over 100.

I put some shock in pool this pm--BEFORE I got on my computer & saw your post. an hour later--not only is pool yukky, stinky green, there were disgusting green bubbles in the skimmer. It s greenish black, green algae can be seen on vinyl liner...

[PoolDoc]

With a PF of 9, each gallon of plain 6% bleach will add about 4.5 ppm of chlorine. With a CYA > 80, you can add up to 30 ppm without much risk of your liner fading. So, do this:

1. Begin operating your pump 24/7
2. ASAP, lower your pH to below 7.8. (See the muriatic acid handling page, linked in my BLUE signature bar)
3. Add 7 gallons of bleach as soon as you have lowered the pH.
4. Repeat this dose each evening until your pool changes color from green to gray or brown.
5. Once the pool has changed color, BRUSH the entire pool, and then add ANOTHER 7 gallon dose.
6. Before each dose, test the chlorine level with OTO - skip the dose if the OTO color is ORANGE. BUT, after you brush, if the pool turns green add at least 4 gallons of bleach regardless if the OTO reading.
7. pH testing will be unreliable when you have chlorine in the OTO orange range.
8. Test your CYA level again ~24 hours after you brush.

Let us know how it goes, generally. Please note the correct volume figure for your pool. This is based on the dimensions you supplied -- 24' round w/ 52" walls.