Fridge grow log, first timer

[Opie Yutts]

i think were thinking of two different types of "switchable ballast"

Actually we're thinking of two different types of scrog.

When you scrog or sog, you have plants vegging in one chamber at the same time that you have plants blooming in another. I really don't understand how a switchable ballast could be beneficial, unless you are blooming and vegging in the same chamber, but that is neither sog or scrog. Please try to know a little about what you are talking about before giving advice, especially to first timers. If you have a screen but no separate chambers, then you are doing a grow with a screen, which is of course a good idea, but not scrog.