Quote Originally Posted by chem geek View Post
newbie2715,

I have some questions about your pool since I'm trying to figure out when corrosion occurs. Since it's an indoor pool, is there any Cyanuric Acid (CYA) in the pool? Most indoor pools do not have CYA because there is no sunlight, but having chlorine without CYA makes the chlorine far stronger in concentration and potentially corrosive. What is your source of chlorine (bleach, Trichlor, SWG)? What is your typical Free Chlorine (FC) level?

Also, when you remove the screws, look at the screw mounts and see if you can tell if they are made of the same material as the screws.

Thanks,
Richard
Well I can grab some pictures of the layout for you. It is a larger room 20x40 or there abouts. Cedar lined, and casement windows, with two Sliders surrounding the pool. So in essence there is lots of sunlight, but not anywhere near the level that you would get with an outdoor pool. I don't find that the sun even helps that much in heating the pool.

I use a solar blanket to keep the moisture off my windows during the night, plus to contain heat.

I have not looked at my CYA level before. I have used faith in my local pool shop to tell me what I need. For Chlorine I use a tablet in the skimmer while the pump is running.

During the winter I do shut down the pool and don't treat it. It just frankly costs too much during the winter months to heat and we don't use it enough during that time.

I will look at the mounts.