Actual wattage issues?

C

ChillStillLearning

Active Member
Mak'er Grow said:
If I'm not mistaken...
Usage draw amounts from the wall is used to tell you how much is being used by the light so you can calculate the cost to run it, but voltage X amperage on the DC side of the driver will tell you the correct draw and wattage amounts the diodes are using/consuming.
Theres a difference between the two...efficiency of the driver circuitry comes into play here.
Oh and if roots are coming out the bottom then put them in bigger pots
Good luck and happy growin' :P
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I’m not trying to go back to school:wall::lol:
 
Cvntcrusher

Cvntcrusher

Well-Known Member
ChillStillLearning said:
That’s what i had it at before but if it’s not the actual wattage like it says shouldn’t it be closer?
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For your light specifically

Seedling 27"
Veg 22"
Flower 18"


Thats what I WOULD DO. Everyone does it different. I personally like my plants to be shorter because of my tents only being 64" tall. And when theyre short bushy and you LST them then flip. You have a nice canopy with multiple plants in a small area.
 
printer

printer

Well-Known Member
The difference between non-dimmed lights wall consumption and what is sent to the diodes is at most 10%.
 
Rocket Soul

Rocket Soul

Well-Known Member
jimihendrix1 said:
It takes 42.5w sq/ft of the very best LED Diodes to equal the best HID Single Ended. 1000w Hortilux HPS has the highest umol of any SE HID. 1600umol

The very best of the best LED Diodes to my knowledge are the Samsung 301h,,,,,, and Osram

The Gavita 1700e is 645w at the wall. And 1700umol, and is made specifically to replace a SE HID in a 4 x 4 area as per Gavita. There are a couple lights that are just a bit more efficient, but not by much. The Phillips Greenpower is the best, but they dont sell individually. They are 635w, and 1800 umol. They will sell 40 of them for $32,000, which is a steal at $800 each.

But going by Gavita, for optimum growth through the full cycle, one needs 42.5w sq/ft

The LED you have is very inefficient. Id put it no more than 15 inches from canopy.

Many LED manufacturers are guilty of highly overrating their products, and also use misleading advertising like say using 1000w in the ad, when the actual watts are 180w, and 1000w has nothing to do about anything involving the light.

Bottom line as was stated above, draw at the wall, and the type of Diodes, and Drivers used is what matters.
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Its a bit more complicated than that. The stated ppf of the hortilux is omni directional and pretty much single point, this means that you get losses in efficiency when trying to deliver the light to the cannopy.
First losses from the reflector material. Then losses in that the reflector still wont project all the light onto the cannopy, its hanging height is much higher and you will have wall losses, both in a tent and in an open space.
If you grow in a huge openspace with overlapping lights or in a vertical/tunnel style grow it starts getting closer.

I dont have experience with 1000w, but plenty of 600w with similar efficiency (1000ppf / 600w)
360w (at board so lets say maybe even 380w) blew 600s out of the water with a 15% yield increase. Our trays are about 11.5 square feet. That means about 35w per foot beat out the hps both in yield and actual readings. We could achiev this cause the light was deaigned to hang 4-8" ocer cannopy.
 
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