Well everyone, in keeping with displaying the bad along with the good, there is a lot to un-pack and a great deal learned during this first go-around with LEDs.
Blue Cheese was harvested today right at the 8-week mark - as noted in the breeder's statements.
As you can see, she is burnt to a crisp.
This is what happens when liquid fertilizer is used improperly. The scenario is simple - under normal circumstances, using my old lighting setup, I counted on the grow to last at least two weeks more than the breeder's statements. (If they say 8 weeks, I counted on going 10 weeks). That being said, I failed to stop adding liquid fertilizer to the water at week six and continued into week seven. By the time I noticed the burn and switched to plain water, the damage was done. Had I not over-fertilized, I might have been able to coax a week or two more from this grow.
Not to worry. This just made for an ugly plant - but the bud is f-ing spectacular. The presence of 10% mature, red trichomes on the calyx was enough to signal harvest. I managed to water with plain water several times so I'm hoping the residual fertilizer salts have dissipated. Otherwise, this batch may be a bit harsh to smoke.
To summarize what I've learned:
The Viparspectra XS2000 is WAY stronger than a traditional 400w HPS, This resulted in a shorter, denser plant. - I've never had plants stay this squat and stocky. It also resulted in a shorter grow than I was expecting - will be following breeder's statements of maturity (without adjustments) from now on.