Finishing off the grow room set up today – will post some pictures a little later on.
I’m firing up my metal halide bulb in my 1000w lamp for the first time. It’s a double ended one from yield labs. I’ve never had a metal halide bulb for veg growth this powerful before. Do I treat this the same as high pressure sodium and just run it at 100% and adjust the height appropriately using the good old back of your hand test?
This ballast has a power adjustment, I can run it at 50, 75, or 100% power. Ventilation is totally adequate to keep temperatures in the room where they need to be with the light running at max power - is there any reason I should turn the output down or just let her rip?
On a similar note, I’ve always vegged my plants under 24 hours of light. Is that still the good wisdom or is everyone doing 18/6 now?