Pot Belly
Honeywagoneer
- Joined
- Jul 12, 2007
- Messages
- 1,321
- Reaction score
- 1,175
I have seen several references to a "one gram per watt" harvest. I have not achieved that yet - if there is a "yet" for me in the future.
Curiously, has anyone acheived a harvest like this? Can it be done without CO2? How about soil? What is the single most important item when trying to do this? Strain?
Also, I have found a problem with trying to compare wattage to harvest ratios: The higher the HPS wattage, the more efficient lumen output is per watt.
200 watt HPS = 22,000 lumens, or 110 lumens per watt.
400 watt HPS = 50,000 lumens, or 125 lumens per watt.
So when you are on the lower end of the grow scale, say 70 watts (HPS), you are at 90 lumens per watt.
Would a more accurate way to verifiy output be "grams per lumen", or "lumens per gram" (because it is a whole number)? Or is the ratio based on a 'standard', such as a 1,000 watt light?
Curiously, has anyone acheived a harvest like this? Can it be done without CO2? How about soil? What is the single most important item when trying to do this? Strain?
Also, I have found a problem with trying to compare wattage to harvest ratios: The higher the HPS wattage, the more efficient lumen output is per watt.
200 watt HPS = 22,000 lumens, or 110 lumens per watt.
400 watt HPS = 50,000 lumens, or 125 lumens per watt.
So when you are on the lower end of the grow scale, say 70 watts (HPS), you are at 90 lumens per watt.
Would a more accurate way to verifiy output be "grams per lumen", or "lumens per gram" (because it is a whole number)? Or is the ratio based on a 'standard', such as a 1,000 watt light?