Hello, recently I had decided to set up a room substituting the 600watt hps with 315watt phillips lec.
I did much research before making this decision, I have read the long threads here and in other forums, as well as studied the specs of the lights.
It seems to me they are way better than then 600watt, relatively.
The spectrum is better, the cost efficiency is better, the UV output is better, but the initial lumens are less.
Because of this, I am pretty sure under normal atmosphere conditions the 315 can perform almost as well as a 600watt hps, maybe it if were 350watt it would actually be better.
Now, my question is, in a 3x3 canopy which I am putting these 315watt bulbs, is it worth it to c02 enrich?
The umol/s and the lumens (33,000 initial lumens) dont seem to have enough photons to let the plant use anything over 400ppm of co2.
I understand that the uv output and the difference in spectrum change some of these factors, but I have not found reliable information to understand how these factors interact and how much c02 a 3x3 canopy under a 315watt lec can actually use.
Using my usual calculations, I would need TWO 315watt lec over my 3x3 canopy to let the plants actually use 1400ppm of co2, but that seems like way too much and kind of beats the point of changing the 600watt for 315watt.
Some people have told me that two 315 over a 3x3 would just be a waste of light, if not actually enough for lightburn.
What I am looking for is optimal yield.
Any input will be greatly appreciated, no guesses please.
Thanks.
I did much research before making this decision, I have read the long threads here and in other forums, as well as studied the specs of the lights.
It seems to me they are way better than then 600watt, relatively.
The spectrum is better, the cost efficiency is better, the UV output is better, but the initial lumens are less.
Because of this, I am pretty sure under normal atmosphere conditions the 315 can perform almost as well as a 600watt hps, maybe it if were 350watt it would actually be better.
Now, my question is, in a 3x3 canopy which I am putting these 315watt bulbs, is it worth it to c02 enrich?
The umol/s and the lumens (33,000 initial lumens) dont seem to have enough photons to let the plant use anything over 400ppm of co2.
I understand that the uv output and the difference in spectrum change some of these factors, but I have not found reliable information to understand how these factors interact and how much c02 a 3x3 canopy under a 315watt lec can actually use.
Using my usual calculations, I would need TWO 315watt lec over my 3x3 canopy to let the plants actually use 1400ppm of co2, but that seems like way too much and kind of beats the point of changing the 600watt for 315watt.
Some people have told me that two 315 over a 3x3 would just be a waste of light, if not actually enough for lightburn.
What I am looking for is optimal yield.
Any input will be greatly appreciated, no guesses please.
Thanks.
