Search results

From your description it's time to replace keypad. I had the same problem. I just bought one through Amazon.com for $58. Pentair 42002-0029Z Switch Membrane. I'm going to install it today.

The vitamin C trick is genius! The black stains are completely gone where I put the uncoated tablets. Thank you so much!!!

Butterfly, Thanks--- I'll get some vitamin C and give it a try and report back. I'll also work on boosting the CH based on what you said about fiberglass. Are there less expensive alternatives to boosting CH or is the pool store the only place to get the stuff? Thanks

Bump-- Any takers on root cause of my issue and possible solutions?

Butterfly, The pool is an 18k gal vinyl. Water supply is a good clean muni water supply. I live in the water rich finger lakes/great lakes region. I'm fairly militant about keeping my chems in check. Although occasionally I might forget and let the CL go to 0. FC = Typ maintained at 3-5ppm...

I will try the vitamin C tablets, but the pictures look nothing like the stains I have. Here's a picture

I have an 8 year old IG pool with built in fiberglass steps. I've noticed that over the last couple years that round black stains about the size of a dime or a bit smaller, are starting to appear on the steps around the edges where the steps meet the vertical wall of the fiberglass steps. I...