green water that won't go away

[CarlD]

Always start with the simple and obvious and see what happens before going to more complicated solutions.

Your pH is 8.2, You MUST get it down. pH at that level has cut your chlorine effectiveness, probably to 1/10!

Get it down to the low 7's and keep it there until the algae is dead--then plan on keeping it from 7.3-7.8.

Be sure to add chlorine neutralizer to the water sample before testing--Ben's kit has it already in the pH test solution.

Don't worry about the T/A. When the pH is where it should be, T/A will be lower. In a vinyl pool, where it is now is fine, but it's high for a concrete pool--but you don't know that it's REALLY high because it moves up when pH goes up. Still, don't worry about it-it won't affect your algae fight.

So get the pH correct and THEN see if the chlorine starts to work on your algae.

[mbar]

I agree with Carl, you must lower the ph. You don't need more sequesterant because the metals would have percipitated out of the water with the high ph and chlorine you have. High ph along with high chlorine is what will make the metals come out of suspension - bring down your ph to 7.2.

[kinneydd]

well, I have the ph down for now, it is back in the normal range, the pool is looking better, it is now a greenish blue. I will continue with the bleach.....

[kinneydd]

I have been keeping the ph down in the normal range and the cl up to 15ppm for several days now. What a vicious cycle that is. It is finally starting to clear up....very slowly........ I never thought it would take this long to get clear. Thanks for all of the advice on clearing it up, I hope its completely cleaned up soon.

[kinneydd]

We are so happy to finally be swiming in our pool. Thank you for your help. Is there anything I need to know about switching the the BBB "system" How often can I expect to be adding bleach?
Thanks!!!

[Watermom]

Typically every day or two depending on your pool. Some people who have higher cya readings, can go a little longer between doses. I test and add a couple of quarts every evening. It takes me no more than 3-4 minutes.