I was actually planning to use the Lucas formula. This as well as the 12/12 right from seed lighting schedule are both done to minimize the vegetative growth since I'm dealing with a notoriously high-yielding sativa strain.
Also, I was thinking about FIMing the plant at least once and attempt getting a little more horizontal growth that way. The light fixture might take up to 1/3 of the vertical space and with the container taking up as much as it does I can't risk the plant growing very tall.
The LED lights are just the kind that are brandless, cheap (about €2.50 each, the €40 listed in the opening post includes the cord and both adapters), super bright and potentially lethal. I received all 4 of them today and checked their functionality. They seem to have improved vastly since I purchased the one I have in the cabinet right now. Beam concentration is a lot better and brightness is way beyond that which used to be.
I'd love to hear any further ideas you have!
:tiphat: