I see, like mine only I remove the ballast and hood when I run bare bulb vertical.
Right now I am running my 25 day old plant under a 315W CMH with ballast attached in the horizontal position.
The plants under this horizontal setup.
When I remove the reflector and move the ballast outside the tent. This is from last grow.
Here are the ballast outside the tent, the second ballast is just opposite this one.
When he talked vertical I was thinking this method. My grow before the last vert was horizontal, and I used the 315 with the hood but I also used a SS400 LED. I tilted both lights and rotated the plants and was running only two plants but got 15 zips off them. Here is a pic of them in veg, you can see the pick hue of the LED on the left and the Brightness of the 315 on the right.
This worked well but running stacked 315 in a vert grow I got 34+ total zips with 24.5 being trimmed smokable buds.
I begin training these ladies next week for this winter grow.
GR