Hi all, long time reader, first time poster.
I am in Baton Rouge, LA and use municipal water in an 18,000 gunite pool using chlorine with a newly installed cartridge filter. I use the BBB method on this site for pool chemistry.
I've had issues in the past with light yellow metal stains in the pool and I've successfully used the ascorbic acid treatment from posts on this site to get rid of them and re-opened the pool with no problem.
The stains have recollected slowly over the last year so I decided to do the ascrobic acid treatment again. The water was crystal clear blue, but the light stains had collected in the walls. With the pH at 6.8 and the chlorine zero'd out I added a little over 2lbs of ascorb to the pool and an hour later added 2 quarts Robelle 2550 mineral out stain remover (sequestrate). I added a Culator 4.0 ppm to the pump basket to prevent them from eventually recollecting.I let it circulate for 24 hours and the stains were all dissolved and looked great. The water was still clear blue.
I raised the ph to 7 and the alk was 90. I slowly began to add liquid chlorine bleach. The water has continued to circulate for 24 hours. The following day the water began to turn cloudy which I read was to be expected. However, when I checked the chlorine it was still zero. So i added more, slowly per the instructions and the water began to turn green. I read this could be due to metals so I added 1 more quart of sequestrate. The water has now been circulating for about 4 days straight and the water is still a cloudy light blue-green. It's not algae. The chlorine is still at zero, but the cloudyness and greenish-blue color has remained stubborn.
Any ideas? I haven't tested the water for the specific metal that, but suspect iron. I ordered some test strips today since its going on 5 days and it hasn't cleared up. I never had this issue with this process before and I have done it twice.
Currently the chemistry is ph 7.2, chlorine zero (keep slowly adding, I know the ascorb is likely eating it), alk 110, hardness 260, CYA 50-60.
Thanks!
I am in Baton Rouge, LA and use municipal water in an 18,000 gunite pool using chlorine with a newly installed cartridge filter. I use the BBB method on this site for pool chemistry.
I've had issues in the past with light yellow metal stains in the pool and I've successfully used the ascorbic acid treatment from posts on this site to get rid of them and re-opened the pool with no problem.
The stains have recollected slowly over the last year so I decided to do the ascrobic acid treatment again. The water was crystal clear blue, but the light stains had collected in the walls. With the pH at 6.8 and the chlorine zero'd out I added a little over 2lbs of ascorb to the pool and an hour later added 2 quarts Robelle 2550 mineral out stain remover (sequestrate). I added a Culator 4.0 ppm to the pump basket to prevent them from eventually recollecting.I let it circulate for 24 hours and the stains were all dissolved and looked great. The water was still clear blue.
I raised the ph to 7 and the alk was 90. I slowly began to add liquid chlorine bleach. The water has continued to circulate for 24 hours. The following day the water began to turn cloudy which I read was to be expected. However, when I checked the chlorine it was still zero. So i added more, slowly per the instructions and the water began to turn green. I read this could be due to metals so I added 1 more quart of sequestrate. The water has now been circulating for about 4 days straight and the water is still a cloudy light blue-green. It's not algae. The chlorine is still at zero, but the cloudyness and greenish-blue color has remained stubborn.
Any ideas? I haven't tested the water for the specific metal that, but suspect iron. I ordered some test strips today since its going on 5 days and it hasn't cleared up. I never had this issue with this process before and I have done it twice.
Currently the chemistry is ph 7.2, chlorine zero (keep slowly adding, I know the ascorb is likely eating it), alk 110, hardness 260, CYA 50-60.
Thanks!
ale:
