Our pool is roughly two years old, and when I opened it in the spring, the underwater light fell out of the (plastic) wet niche. The brass / bronze mounting screw had corroded away. The instructions that came with the light state that the hardware must be replaced with the same type and size. I have no problem putting a brass screw back in the spot, but I'm wondering if the corrosion is a sign of something bad happening with the pool bonding system or some other issue. Or is two years about the lifespan of this screw in a SWG pool?
Underwater light mounting screw
- Thread starter Halzg
- Start date
jsygrls
Gold Supporter
Why don"t post a couple of photos of the screw, mounting. along with the model and brand name. One of the TFP guides surely will have input.
My Hayward lamp/niche screw was replaced once in 20 years .
It sure wouldn't hurt to post what method you test with and recent test results.
My Hayward lamp/niche screw was replaced once in 20 years .
It sure wouldn't hurt to post what method you test with and recent test results.
dBsooner
Gold Supporter
I have a Taylor K-2006 kit. I have a sock full of CYA in the skimmer, I opened with 0 CYA and have been getting the other chemicals into balance first.
dBsooner
Gold Supporter
The first thing you should get into balance is FC and CYA. Without CYA, you won’t keep FC. Without FC, you can’t sanitize.
jgofnj
Silver Supporter
- May 28, 2013
- 357
- Pool Size
- 18500
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Did you ever get the screw situation resolved? From what I understand, Marine grade stainless steel 316 is what you want. I found online that sells it by the piece.
I ended up just replacing it with brass. My concern was that it was acting as an anode, causing to to deteriorate quickly. When the pool was built, I know the light and light bucket were joined to the bonding system, so I’m not really expecting a problem. I thought replacing in kind would be a safe choice for now, unless some other issue turns up.
