Homebrew PCBs

The tubes that I am using are Black Lite, when I got them at a 
lighting dist. I had asked for these with out the blue filter which 
was what M.G. Chemicals had recommended using but after I picked 
them up and got home with them found that they had sold me tubes 
with the blue filter.  I tried them and worked OK so here I am some 
10 years later and still using them.  They are a Sylvania  
Blacklight Blue  F15T8/BLB   I use (4) of these at a distance of 
about 7" for about 5 to 6 mins.  I normally do boards 12" x 8" or 
10" x 8" in size and using the M.G. Chemicals 600 series boards.

Ben