spazstic
Well-Known Member
Lumens per watt, a 600W is slightly more efficient than a 1000W bulb. The 600W also can cover more area (if you are using more than one light). If electricity is not a concern, use 1000W. It will give you larger buds since you are providing more lumens per sq meter. However, if electricity is a concern, a SOG technique can be used to maximize your harvest with the least amount of electricity consumed. 1000W and 600W will both utilize CO2, but the 1000W will use it much better. MASSIVE COLAS with 1000W, but more quantity with a couple 600W. The lumen output is comparable, but the 600W is SLIGHTLY more efficient. It really boils down to personal preference and electrical consumption concern. I think (4) 600W would be preferable to (2) 1000W, but I'm not sure I would say the same about (1) 1000W and (2) 600. If you are only using one light, definitely go with the 1000W. It will not let you down. Buy a switchable ballast too, so you can use MH for a few weeks vegging and the HPS for flowering. You will get EXCELLENT results.