Well the problem was that my developer was too hot(110). I confirmed this yesterday evening. With the new developer this started happening. When I backed down to about 90 degrees it stopped. I was trying to make my own PO and it ended up in a mess. I am no chemist. Thought I could save some bucks but ended up throwing good money away for bad. I'll not do that again. I was happy to find out that Mike at Artcraft will really discount the price when you buy five or more pounds of the powdered PO. That was good news. Everything is working fine now with lowering the developer temp. Now the new problem........................Has anyone ever noticed flucuations in UV output with a bank of BLB tubes? Are they sensitive to voltage flucuations? Thanks for all the good info guys I really appreciate it!!!!