I removed my light fixture today and took some pictures of the fixture. I wanted to get TFP's advice before I take it apart as I don't want to spend money on a new fixture or anything, I just want to replace the bulb. It appears to be a Underwater Laboratories Purex 100-3. I only found one result with any information on google:
Should I disconnect the fixture from the wiring and take into my local pool supply store like the customer service guy suggested? The wire assembly does just unscrew from the fixture, right"Comment by John Crager on November 10, 2010 at 2:42pm
I need to replace both light fixtures in my pool and spa. I have a purex model 100-3 Froming Shell No. 425. 120v, Lamp R-40 300w. My question is which fixture to I need to buy and will I need a Purex adapter ring? I have been unable to find my fixture online or locally, hopefully you can tell me what I need so that I can purchase in install 2 of them.
Comment by Pentair Product Technician-Ben on November 11, 2010 at 7:54am
Being a purex light it's hard to say. Some are exactly the same as the current lights, but some are just a little different. I would recommend you take either the whole old light, or at least the face ring to a local pool store and see if it matches up to a newer light's face ring."
Taken from Google Cache
Also, when I pulled the fixture from the hole lots of slimy/mud went into the pool, you can see some of it on the side in second picture. There appears to be more in the hole but I left it alone when I vacuumed up the debris that fell to the floor. Any ideas what this is?