Late - re; the bulbs.... When I do a quick glance of 1000 hps bulbs, it seems the Hortilux has a goodly amount of lumens in comparison. It's right up there or surpasses some others. Same with the 400. But it seems with the 600, the Hortilux lumens are very much on the low side. 85k vs. 92-95k.

Should I ignore the fact that the Hortilux has lower lumens because it brings other things to the table? My thinking was the more lumens, the better. Is my theory wrong? Seems the 600 is an oddball situation.

Big Bud & PPM - I'm still confused. If my current PPM is 1200, adding 15ml of BB will raise my PPM by 900. My total PPM will be 2100. Isn't that bad? Shouldn't I lower my current PPM to around 300-600 before adding the BB?