hi all, i have previous cfl growing experience. how much better is it to use a hps setup. i can normally yield 8oz from 4 plants in a hydro pebble setup. does anyone know how much more yield i could expect from the same setup and growing conditions but using a hps 240w light instead of the usual cfl i use.
240w cfl vs 240w hps
- Thread starter jayme001
- Start date
monkeybones
Well-Known Member
that isn't necessarily true. it depends on how well you are trapping in the light
if nothing at all is wasted, i.e. every bit of light makes it to a leaf, then it doesn't matter if the light is coming from a HID or a candle
watts are watts. energy is energy
the benefit of HIDs is their penetration
plants typically do better under them simply because it is ALMOST impossible to get 100% usage out of your CFLs
the light from them is too flimsy to penetrate anything
monkeybones
Well-Known Member
don't get his hopes up buddy
Warlock1369
Well-Known Member
If you can keep temps in check and don't mess up on nutes. And don't stress them out. You can get over a L. But gonna say your going to get 8-16 zips. It all depends on how you grow. But the light will help
PJ Diaz
Well-Known Member
This is totally wrong. Stop spreading misinformation.
True, watts are watts -- however you don't measure light output in watts. You measure in in lumens, lux, or footcandles.
The simple facts is that different light sources have different levels of efficiency.
The energy (wattage) is used by the specific lighting instrument in two ways:
1: light output
2: heat
I less efficient instrument or lamp (like a cfl) will emit less light and more heat than a more efficient HID type light.
A 250w cfl will produce an average of 12,000 lumens, while a 250w HPS will produce around 28,000 lumens. My math says that's more than twice as bright for the same wattage.
FresnoFarmer
Well-Known Member
im gonna have to disagree. have you ever read the book Buds 4 Less. Garden Knowm yielded 8 oz from 8 42 watt cfl's
RollupRick
Active Member
My CFL use includes 4 x 125w CFL bulbs, each giving off around 8,000 lumens. That means a total of 32,000 potential lumens, split across 4 seperate sources of light. Combined with ability to get a lot closer to the canopy, its possible to get fantastic results. Most of the people with poor results from CFL's seem to use tiny generic household bulbs. You want the big ones, in the right spectrum. And theres no way CFL's are hotter than HIDs. One of the main selling points of CFL's is their low temperature compared to HIDs. 500w of CFL puts out about 32,000 lumens, similar MH about 10,000 more. So if you use the CFL's advantages (low temp, portability) you can sew the gaps so to speak.
My setup is getting a 400w metal halide light, for a ScrOG, that being the main top light, but each 4 corners of the mesh will have a 125w CFL as well. To me the most efficient way is to use the benefits of each light, to the maximum advantage. Why does it have to be one or the other?
My setup is getting a 400w metal halide light, for a ScrOG, that being the main top light, but each 4 corners of the mesh will have a 125w CFL as well. To me the most efficient way is to use the benefits of each light, to the maximum advantage. Why does it have to be one or the other?
billybob420
Well-Known Member
I'm surprised people even argue about this still. watt to watt HID>CFL any god damn day. Fuck heat, get a fan.
RollupRick
Active Member
The 1000 hps will kick ass, but if you don't get it close to the canopy, 1000w made up of multiple types of light positioned close/more efficiently could produce the same results.
RollupRick
Active Member
125w x 4 = 500w, nice save, but I didn't notice, BUT, more importantly, I might have noticed and still couldn't manage to really give much of a fuck, LMAO, sorry, just looking for an excuse to use this image I found:
RollupRick
Active Member
There will be a noticable different absolutely, as long as you adjust the height of the light to the best position as they grow etc. Any light is only as efficient as we allow it to be.
well i will chime in as of last few years i noticed CFL growers are doing pretty dam good trying to compare 600 watts of cfl's to a 600 watt hid or 1000 hid is plain crazy a 1000 hid can be 24" away from canopy and still have litterally 100 percent efficiency thats the thing with 1000's it gots a shit load of penetrating power so you don;t need a 1000 to be close to a canopy for it to produce BIG YIELDS secondly you here that you can't get a 1000 close to a canopy again i beg to differ with proper wind movement in a grow room you can place 1000's like 13 - 16" above tops again having them this close isn't going to give you better yields being a 1000 watt hid starts to lose lumen penetrating power @ around 24" from tops and up
and 600's will start losing par around 20" from canopy 600 will faster luminous by every inch further from tops as it goes away