basic grams per watts

ravak

New Member
I'm going to be buying 2 HPS 1000w lights soon and I'm using them to grow 4 plants, how much yield would there be?
I'm new to this so I'm trying to learn as much as i can before i start, thanks.
 

ravak

New Member
before you buy those lights lets hear the dimensions of your grow setup, what types of fans your using , and what grow method you're using. This will help with our input
im going to be using the closet in my room, its a 8 foot long 4 foot wide closet, a 4 inch 203 cfm fan for exaust and another one to blow air in, the closet is a little shorter than the room at 7.5 feet tall.
 

ravak

New Member
About a pound. Or 2000 grams. Or somewhere in-between.
thank you first off, and a quick question, this summer because the tempature wont be freezing ill be growing 4-5 outside in a small field with tall grass, what would the yield be of that, its in visible sunlight for all 12 hours on a clear sky and i can till the area to place down coconut soil or something along the lines. my entire yard is shrouded in trees and the area is really cut off from the rest of our yard by trees to so i thought it be a good place to grow too.
 

SPLFreak808

Well-Known Member
I would personally start with less power until you get the hang of things, diving into a 2kw grow could get overwhelming for a first timer but if you do, your going to need a bigger fan and will be limited on veg height.

200cfm wont do much for a 2kw room & 7.5ft height would require your plants no taller than 2 ft before flip.
 

Saboo the Shaman

Well-Known Member
I've always thought the 'gram per watt' measuring stick was useless without other parameters like time taken into account.

If one plant grows 1000 grams with one month veg and a second grows 4000 grams with 6 months veg under the same 1000w light, which is making more efficient use of the electricity? The first was 1gram/watt, while the second was 4 grams/watt. It should be kwh/kg or some such.
 

Kingrow1

Well-Known Member
Grams per watt was just for growers using the same lights and veg times even strains to compare their results. Many used one four week vegs and so 1gram a watt became something to aim for.

Then came leds and with inflated veg times they started saying they could yeild 3g/w and hps was shit and should go find a dark corner burst into flames and die.

Leds made many harmonious subjects into toxic crap no one wants to discuss anymore as all you get is trolls talking hype :-)



I've always thought the 'gram per watt' measuring stick was useless without other parameters like time taken into account.

If one plant grows 1000 grams with one month veg and a second grows 4000 grams with 6 months veg under the same 1000w light, which is making more efficient use of the electricity? The first was 1gram/watt, while the second was 4 grams/watt. It should be kwh/kg or some such.
 

Saboo the Shaman

Well-Known Member
Grams per watt was just for growers using the same lights and veg times even strains to compare their results. Many used one four week vegs and so 1gram a watt became something to aim for.

Then came leds and with inflated veg times they started saying they could yeild 3g/w and hps was shit and should go find a dark corner burst into flames and die.

Leds made many harmonious subjects into toxic crap no one wants to discuss anymore as all you get is trolls talking hype :-)
Exactly, and most modern growers aren't aware of that.

It doesn't have to be toxic, though. It would just be nice to have a way to objectively compare efficiency, and a ratio of KWH to harvest amount would do so, no?
 

DonnyTinyHands

Well-Known Member
Exactly, and most modern growers aren't aware of that.

It doesn't have to be toxic, though. It would just be nice to have a way to objectively compare efficiency, and a ratio of KWH to harvest amount would do so, no?
It would. I'd do g/wh so higher numbers are better. People have tried to make it a thing before. But most people are fucking terrible at math so apparently it's too complicated.
 

Saboo the Shaman

Well-Known Member
It would. I'd do g/wh so higher numbers are better. People have tried to make it a thing before. But most people are fucking terrible at math so apparently it's too complicated.
Agreed that g/wh would be better. As long as time is factored in, I'm down. :)

Re the math deficiencies of others, I refuse to pander to the lowest common denominator. Someone else's education or lack thereof isn't my concern. I saw enough of that in the workplace, I don't need it in my garden.:bigjoint:
 

Kushash

Well-Known Member
I'm going to be buying 2 HPS 1000w lights soon and I'm using them to grow 4 plants, how much yield would there be?
I'm new to this so I'm trying to learn as much as i can before i start, thanks.
As said above by SPLFreak808 1000w hid lamps are not a good choice for a new grower even if there was room for them.

1000w HID plus interest in how many grams per watt can I get from a new grower sounds like a train wreck headed for the Plant Problem Section.

The good news is the pics won't be purple.
 
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