It seems like a dirtily substance.. When i brush it nothing comes up or if i vacuum that area. I am attaching a picture..
Anyone know what this can be?
- Thread starter precator
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That looks like staining, rather than algae. Try holding a vitamin C tablet against a stained area for 30 seconds and see if the stain goes away or gets lighter in that area.
Also I saw this guys link.. his stains look a lot like mine. But I did not see a resolution on his post. He did mention though that vitamin c did not help him much either..
Yep, 30 seconds. However, in my pool, the spot was kinda difficult to get to, so I smashed a few vit C tabs in a cotton sock and held it in place w/pole for a few minutes. Some tabs have an outer coating that may take a while longer to get 'melted'.precator said:
Have you used any copper products in your pool?
The color is a little dark, but it sure looks like Calcium to me. Through the water, with plain white plaster, mine looks sorta bluish gray. When you see it exposed, it's more of a tan color. I posted a few pics a while ago in this thread: post228991.html#p228991
Obsessive maintenance of CSI around -.5 has removed a lot of my scaling. I suspect I will be able to post an after picture by the end of summer.
Obsessive maintenance of CSI around -.5 has removed a lot of my scaling. I suspect I will be able to post an after picture by the end of summer.
What is CSI? and how did you solve this problem. Mine looks very close to your pictures
CSI is the Calcium Saturation Index. It is a calculated value. Pool Calculator will do it for you, if you enter all the variables. See this thread and save me a lot of typing.
Richard320 said:
My CSI was at 0.37 Prob way too high.. Looks like I need it to get to the -.05 correct at least to start removing the scaling?
.37 shouldn't be a problem. However, that's not to say it has always been at that number. When I got a test kit to check up on the pool service I sorta inherited with the house, pH was off the scale! And with the hard water here, scaling was inevitable. Since I took over, pH has been under control, yet the scale remains.
Keeping CSI near zero will keep things as they are. I had to drive TA waaaay down and keep pH at 7.3 to get CSI down to -.5. Then I got a lot of rainwater, which reduced TA and CH a lot, and that's when things really started to improve. If you want to try my method, you will need frequent water testing, like every other day, lots of acid, lots of brushing with a steel brush, and periodic partial drains to lower the CH you have been increasing by dissolving scale. And a year or two.
Keeping CSI near zero will keep things as they are. I had to drive TA waaaay down and keep pH at 7.3 to get CSI down to -.5. Then I got a lot of rainwater, which reduced TA and CH a lot, and that's when things really started to improve. If you want to try my method, you will need frequent water testing, like every other day, lots of acid, lots of brushing with a steel brush, and periodic partial drains to lower the CH you have been increasing by dissolving scale. And a year or two.
