NO brigher than VHO

[DJ88]

Are you going to do a series of readings over a period of time?

<font size="2" face="Verdana, Helvetica, sans-serif">Yes I will be. Once I design some amplification circuitry and filtering circuitry for data logging, the ballasts will be run on 10 on 2 off cycles. All of this will be done until I see a 1/3 drop in lamp intensity. Hopefully that doesn't take TOOO long.. :D