Lights- Calculate based on the formula in my noob instructions sticky. Watts, time on, your kWh rate.
MH is vastly superior but unless you are flowering under at least 600w HPS, using one for veg is likely to be overkill. Totally dependent upon your grow style and how many mothers you keep. If you keep a significant genetic library, you definitely want a MH for them.

Strains an SOG- Good choice for a style. SOG is efficient. Try Hindu Kush or Papaya for big yielding SOG strains that are easy to grow.
stinkyattic Reviewed by stinkyattic on . Prospectful grower with a few questions Hello there, I've been thinking about growing for a very long time and I think I'm finally going to invest in the equipment and time to do it =D. But before I plan I have quite a few questions. And yes I did look search the forums quite a lot before I asked you guys. Lights - Is there a substantial difference in the electricity costs between a 400 watt hps and a 600 watt hps? And what are the appropriate dimensions for 400 watt and 600 watt hps flowering grow spaces. Also are MH lights Rating: 5