dude this is simple............build two identicle boxes down to the ventilation and everything.
so who has done it? there must be someone
dude this is simple............build two identicle boxes down to the ventilation and everything.
Do a little research. 400W comparison would be a slaughter, given the efficiency of HID vs. CFL. Look at a couple of links in my sig.the post above me is why no one has done it.
AlB posted a 119 dollar 400 watt hid example. If you bought that and plugged it in and used a "tattle tale" to read the actual wattage coming out of that plug, you could easily figure out how many cfl's you can run in the next box.
Im broke...........or Id do it. Id do it with HID, CFL and LED to show exacting side by side comparisons to all three with yeilds by gram and how many watts it took to produce it.
Science isnt hard, its demanding of details. Youd need to have exact wattage pulled, exact time it took and you have to keep conditions the same. So you may have to add fans to something to keep temps in range and or other variables. If you dont take accurate notes on this stuff, no one will believe your notes.
The biggest thing is gathering equipment. I dont think anyone is willing to donate a 400 hid and 400 watts of led for this.
Dude! Thats SO quotable!Don't be a martyr wasting $100 or more on CFLs to prove they're inferior for flowering pot.
i have been growing for ten years now and have read tons on lighting and u r the first person i have ever heard this kind of stuff it says a million cfls dont match 1 hps that is bull they have cfl with the same spectrum as hps and spectrum and lumens is what u need to grow dif stages dif lights the more intense it is means u need to put the plants farhter away from the light and u r not understanding what these ppl r saying u r talking about a totallyh different thing then they r no body knows everything there is to know about growing weeed everybody has more to leartn i haver been growing for tenn years when to weed college butr there is always more info to learnLumens is essentially the raw amount of photons emitted in total from the bulb, adjusted for the sensitivity of our eyes. The number of lumens is therefore not a function of where your target is - plants, whatever.
Lux is an intensity - lumens / m2 - that is the number of photons striking a unit area per second. This therefore depends on where you make the measurement.
So intensity is therefore the relevant quantity for plants. The measurements I have made are of intensity, and the most meaningful quantity.
Brilliant!i have been growing for ten years now and have read tons on lighting and u r the first person i have ever heard this kind of stuff it says a million cfls dont match 1 hps that is bull they have cfl with the same spectrum as hps and spectrum and lumens is what u need to grow dif stages dif lights the more intense it is means u need to put the plants farhter away from the light and u r not understanding what these ppl r saying u r talking about a totallyh different thing then they r no body knows everything there is to know about growing weeed everybody has more to leartn i haver been growing for tenn years when to weed college butr there is always more info to learn
Great data Cee, thanks for that. I wonder about differing dispersion/diffusion patterns. First off, it seems like plain white on all surfaces would be the way to really see how the light builds in a confined space. I wonder about your floor surface being carpeted etc. If you really want to clean up this data I think it needs to be tested with the bulb spacing/height adjusted a couple times and the surrounding surfaces either completely nonreflective or completely white, including the floor.