Hi Jeff!

welcome to the forum!
i'm not familiar with this bulb,any additional info you could provide would be helpful.
is there a colour temperature 4000K 6500K or ***K something?
how about info on the light output, measured in lumens or lm?
most orchids enjoy a 10-15 F degree drop on the temperature at night, some refuse to flower without it. do you have a thermometer with a max/min memory? most likely the temp drop will only benefit your plants.
at the moment i'm going with a 12hr on/off schedule. personally i wouldn't exceed 14hrs of light.
Antti