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Dang it... What about using something like this out spot thing I saw: http://www.youtube.com/watch?v=QYrXjIesf28 Anyone use this or something like it with acid? Would this thing filled with acid harm the plaster?

When I was looking at the pool the other day, I noticed my Polaris climbing the wall and taking the exact same path as the striations in the stains. There's even a slight curve at the beginning of the striations which is exactly what the Polaris does as it begins its ascent up the wall. My...

The puck is something I have not done, but now after reading your thread I think I'll give it a try. Do you have a pool cleaner? I ask because I noticed in one of your pics there are striations in the stain which I also have in my pool, especially on the walls. I'm thinking the pool cleaner's...

I was thinking of adding acid to the water using either a pvc pipe or one of those out spot removers I saw on Amazon and then use a wire brush. Is this not a good idea? I definitely don't want to gouge the plaster.

Thanks for the response. So if I understand you correctly, most of my pool is covered in scale and the white is what the plaster should look like?? Time to learn about CSI.... What happens if I use acid and a steel brush, or is that something I don't want to do?

As for the white marks, I also noticed lines or striations near the water line directly under the tile as seen in this photo (ignore the dark mark in between the pool light and the sun - that's a reflection of a tree in my backyard): It's a little hard to see, but if you look to the right of...

I recently purchased a home with a 7-year old in ground pool with a salt water system. For the most part the pool and equipment are in very good shape, except for a high calcium hardness reading and two different kinds of plaster stains. First my current test results: FC = 5 CC = 0 PH = 7.2 TA...

Oh, and the water is very clear, even at night when viewed with the pool lights on.

Wow, those were some fast responses.... :-D Thank you!! I just added acid to the pool per the pool calculator to bring the pH down to 7.2. Will test again in the morning. As for scaling, I'm not 100% sure as to what it looks like, but there appears to be some minor streaks on the pool floor...

Just received my new testing kit and had the following results: FC = 5 CC = .5 pH = 8.2 TA = 100 CH = 650 CYA = 30 I tested the water twice to make sure I got accurate results. Obviously the pH is high and I'm about to add muriatic acid. CH also appears to be really high. How do I go about...

Thanks! That is really easy.

Just bought a home with a nice in ground pool. I have an Intermatic PF1202t dual circuit timer and I'd like to install additional trippers for a second pump run. It uses the silver and gold trippers with the small screw. How do I install these on the dial? Just reach up and insert them behind...