Hi Mark,

If you are using traditional magnetic ballast (that uses a little starter thingy) to drive the lamps then you should have no problem with swapping to UV tubes. If you are using electronic ballasts however, beware as they are *very* specific to a given tube type. The UV tubes I am using do not work in some electronic ballasts designed for equivalent white-light tubes; the operating and striking voltage of the UV tubes is higher and therefore the over-current protection in the electronic ballast tends to trip out before it can strike the lamps.

Best regards,

Evan