600 watters are most efficient? I must be missing something!

S

StoopidLungs

Well-Known Member
600 watt hps = 90,000 lumens
1000 watt hps = 150,000 lumens (growbright)
Which means BOTH of them give you 150 lumens per watt... So what am I missing?

I've been reading time and time again about how efficient 600 watt HPS are and how some people love them and would never get 1000 watters, simply because the 600s offer more lumens per watt... Now I do understand that the 1000 watters will get hotter, which will require bigger fans and cooling and need to be further away from the canopy, but why does everybody talk about lumens per watt? They are the same with the right bulb. Doesn't the penetration of the 1000 watter more than make up for the longer distance from the canopy? Regardless, I am going big with the 1000 watter :hump:
 
T

tibberous

Well-Known Member
StoopidLungs said:
600 watt hps = 90,000 lumens
1000 watt hps = 150,000 lumens (growbright)
Which means BOTH of them give you 150 lumens per watt... So what am I missing?

I've been reading time and time again about how efficient 600 watt HPS are and how some people love them and would never get 1000 watters, simply because the 600s offer more lumens per watt... Now I do understand that the 1000 watters will get hotter, which will require bigger fans and cooling and need to be further away from the canopy, but why does everybody talk about lumens per watt? They are the same with the right bulb. Doesn't the penetration of the 1000 watter more than make up for the longer distance from the canopy? Regardless, I am going big with the 1000 watter :hump:
Click to expand...
Yeah, it's generally better to go all thousands. 600's are nice for vertical because you can stick 1 low and 1 high and distribute the light a little better.
 
Alexander Supertramp

Alexander Supertramp

Well-Known Member
StoopidLungs said:
600 watt hps = 90,000 lumens
1000 watt hps = 150,000 lumens (growbright)
Which means BOTH of them give you 150 lumens per watt... So what am I missing?

I've been reading time and time again about how efficient 600 watt HPS are and how some people love them and would never get 1000 watters, simply because the 600s offer more lumens per watt... Now I do understand that the 1000 watters will get hotter, which will require bigger fans and cooling and need to be further away from the canopy, but why does everybody talk about lumens per watt? They are the same with the right bulb. Doesn't the penetration of the 1000 watter more than make up for the longer distance from the canopy? Regardless, I am going big with the 1000 watter :hump:
Click to expand...
Your not missing anything as far as the math goes and the whole 400vs600vs1000 conversation. First off the lumen per watt difference between the 3 is not all that different, pretty negligible. Which really dosent matter nyways because its the PAR rating of a bulb that really matters, not its lumen output.

As far as penetration goes between the wattages, this matters. The inverse square law along with canopy depth and density come into play when it comes to wattages.

Grow style, room size, ability to deal with heat, yada all come into play........
 
Slipon

Slipon

Well-Known Member
agree with Supertramp

on a side note: my 600W HPS produce 92,000 Lumens

but any light 400 or 1k Etc. will loose a lot of effect after just a little running time even the more expensive once, also penetration as SuperTramp talk about is alfaomega when we talk indoor growing using artificial light

View attachment 2467636


another thing to take in to consideration is if you want to grow vertical or maybe use a cool hood, with a cool hood the glass will block out some light (according to my light meter about 10-20%) mine drop a foot a away from +8k to 7k but I can also keep it much closer to the top of my plants now, maybe 12" instead of 20"

View attachment 2467648
 
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