I've recieved a couple PMs in the past few minutes about the inaccuracy of the apogee meters when testing actinic lighting, so I figured I would clarify a bit in the thread. I apologize to the OP for sidetracking...
The inaccuracy is most evident when measuring LEDs with an output around the 400nm spectrum due to their narrow spectral range. With other lighting options such as T5, the inaccuracy isn't as prevelent. Bulbs such as the Blue+ have a much wider spectral range that is accurately measured by the quantum meter and therefore the deviation from accurate readings is much less significant. The inaccuracy will be slightly more significant in T5 bulbs such as True actinic bulbs in the 420nm range, but they still possess a spectral range wider than that of a RB diode.
This is only based on what I have read, so please don't interpret this as gospel, but perhaps some of the lighting gurus can chime in to verify my summation.
