@SSGrower Yeah, as tedious as that is, some cultivars will react really well to it.. search GrandpaGreenJeans up on his write ups on it. Some really interesting stuff. I wouldn't recommend it for your average monster crop but for your fav plant, or two, shit, nice treat.
In the co-op that runs my strains and recipes, its a 60:40 mix of 1000w CMH to HPS, switchable ballasts, so you can run either bulb type, usually cheapest bulbs one can get, as new lights each round is whats important.
But in the other smaller garden, its 315 LEC SunSystem with Phillips bulb, mostly.
and in the personal garden / competition garden, its all hand built LEDs (Vero 29 COBS, 4500k, 3500k, as well as far red, deep red, and UVs)
Also got the team working on lights direct from manufacturer, foot wide, dimmable 150 w panels with meanwell drivers and 150º angle beams.. If anyone needs lights that last and put out the crazy resin.
@calliandra UNBC my friend, UNBC.
@Shlubly, smell first, structure second, my friend.. know what I mean...
smell first, then structure, thats most important for me anyway, as well as metabolism and immune system .. but smell.. big one. nice and stinky by that 5th node or sooner, thats what I really like to see.