possible testing of waters with MV lamp moth set up w/sheet?

I haven't been much into moth baiting other than what a standard butterfly bait trap collects which can be fairly impressive when checking at dawn. Anyway, due to prohibitive cost, I have avoided the moth light traps, but I am coming across DIYers using self ballasted mercury vapor lamps and a sheet.  It looks like it might be the way to go for just testing the area to see even if any moths are present.  I have three questions:

1)  What self ballasting MV lamp would be recommended?  Of course, that is key.  I'm finding clear ones next to impossible to find online.  I am US based.  Seems like 150W or more is the way to go.

2)  What cheap lamp holder is recommended?  Again, keeping costs minimal.  I would think something from the hardware store might work(?). 

3)  Do you have to wear UV goggles with these and what is recommended?

Like I say, just testing the waters.  Would use a lamp with sheet just to see if worth pursuing further. 

Thanks in advance.