Per WATT what's the BEST grow set up/system?

Vertical is obviously the absolutely most efficient use of light


Digital ballasts with 600 watt bulbs provide the most lumens per watt by a good amount

If going with a more traditional setup, aeroponics usually provides the most explosive growth out of everything else. I'm a big fan of aero. As long as you can keep your res temps in check it's worth looking into!
 
interesting... I always thought that was the least efficient cause the leaves are flat.

why aren't more people doing vertical grow ops if they are so beneficial per watt yield?
 
...600 watt hps has the best lumens per watt ratio when it comes to HIDs. Meaning, you get more lumens for the price of electric than your 400 watt, 1000 watt, exc...
 
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