LIGHT SHOPPING FOR A 4X4

Budzbuddha

Budzbuddha

Well-Known Member
Take any and all “ par “ charts with a grain of salt.
Sometimes a bucket of salt.

Factor the appropriate power for your square foot of space - minimum 30-32 watts per. ( or better )

I would lurk grow journals and see what growers are using - maybe the one you are looking at. That way you can see how well they work before shelling out some dough .

GL
 
Billy the Mountain

Billy the Mountain

Well-Known Member
Budzbuddha said:
Take any and all “ par “ charts with a grain of salt.
Sometimes a bucket of salt.

Factor the appropriate power for your square foot of space - minimum 30-32 watts per. ( or better )

I would lurk grow journals and see what growers are using - maybe the one you are looking at. That way you can see how well they work before shelling out some dough .

GL
Click to expand...
Good eye, that PAR chart is clearly not based on real-world measurements and it's easy to spot.
At the 20" height it claims ~2400 PAR, at 40" it claims ~1800 PAR, or a mere 25% reduction with a doubling of distance.
Similar shenanigans between the 20" and 12" PAR numbers
In reality, light falls off with the square of the distance; i.e. double the distance, 1/4 the intensity.

That chart is blatantly fraudulent.
 
V

VaSmile

Well-Known Member
Spectrum looks good, that bump in the far ir will give it a bit more of a heat signature(worth it) 20lbs is a brick(wouldn't bother me much)
Looks like it would be cheaper to get 2 of the 400w model(budget light assume cost is a concern)
 
Fallguy111

Fallguy111

Well-Known Member
VaSmile said:
Spectrum looks good, that bump in the far ir will give it a bit more of a heat signature(worth it) 20lbs is a brick(wouldn't bother me much)
Looks like it would be cheaper to get 2 of the 400w model(budget light assume cost is a concern)
Click to expand...
I have a bar light that fills the tent and would much rather have two so I can separately control distance and intensity.
 
V

VaSmile

Well-Known Member
I got to say, I'm firmly on team HLG. They are the leaders in R&D they change the game and everyone else copys them, customer service is impeccable, supposedly their lights last for ever(haven't grown long enough to say first hand). But they are costly. OP is asking about a light that is around $0.4/w so I assume either budget is an issue or he has not grown long enough to be ready to invest in top end shit. I'm absolutely stocked with my adiding, they don't even have their grow lights on their web page since about a week after I ordered mine. At the end of the day light is light as long as you got the right spectrum you will grow perfectly good bud
 
coreywebster

coreywebster

Well-Known Member
Check the dimensions, my 2x 600w bar lights are almost wall to wall in 4x8.

I agree 800w is unnecessary and I agree that par map is way off being accurate and that would have me questioning everything else they say, from spectrum, to parts used..

There are sooo many options these days but be suspicious of claims made
 
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