Written By Chewberto420
Black Dog Platinum XLU LED Light
The Black Dog LED Platinum XLU Light was tested along Side standard 1000w HPS lighting. I used the same Clone Only Strain of Gods Gift to do the test. The Medium was A depleted Soil that was Void of any Nutrients, and I used Dragonfly Earth Medicine Line. Exact Same size Pot, Feeding schedule, and treatment.
Early Veg looking through the Method Seven Black Dog Operator glasses.
After a Complete Cycle from Vegetative through Bloom, here are my thoughts...
Note-All Pictures will Portray LED on left side or Top…
6 days in Bloom
Early on in flower I noticed that The led side created a more even flower set and canopy, and stayed a bit shorter than the HPS.
After the stretch, the Led side remained a few inches shorter, but more even. Led resin is more abundant toward the leaf tips and in general. You can see the LED side (top pic) is more rich in green/chlorophyll and is loving the Light.
36 days in bloom
At this point, I can see a slightly larger flower build on the HPS side, but the chlorophyll is less present on the HPS side and its fading faster. I have also begun to notice The LED side desires less water as well.
40 Days only LED
43 days in bloom
The Led Side is still moving along swimmingly, and desires no extra nitrogen, and is much more happy than the HPS. The buds are starting to dense up a bit faster on the Black Dog Side.
52 days in bloom
Its clear to see the trichomes are loaded on the LED side, and the Fan Leaves are green as can be and they aren’t showing any signs of stress.
Very happy plants..
62 days Harvest
LED is My Favorite at this point because the Sugar leaves are still caked and have not suffered from any light/heat stress like that on the HPS side, which means my trim will be more desirable to work with when making extracts.
There is simply just more resin, which is actually greasier, and it smells better.
The side by side on dried and cured Gods Gift Flowers.
After a month in jars and a 2 week drying period, I’ve determined that the LED is a superior Product in quality and efficiency.
Here are the Numbers.
Gods gift Grown under Black Dog LED Platinum XLU was
94 grams @ 750 watts = .125 g/watt
Gods Gift grown under HPS was
107 grams @ 1050 watts = .102 g/watt
(note 1000 watt HPS Lights run higher than 1000 watt and 1050 is fair based on readings we have taken)
To calculate the efficiency:
.125 GPW LED Subtracted from .102 GPW HPS would equal 0.023 / .102 = 22.5% increase
The Aromas and Flavor is undeniable as compared to HPS.
Black Dog LED’s Platinum XLU Light is an all out Winner in every aspect.
The main thing that i noticed throughout flower was how much more Lush and Green the LED side was throughout Her Life in contrast to the HPS Side. Gods gift took the Environment like a champ and without any ill effect.
A huge benefit that i see is for for the grower struggling with heat in the grow room.
When Growing with LED it is important to raise the ambient room temperature to around 85 opposed to a conventional 75 degree sweet spot.. The reason this is necessary is because the Leaf surface temperature has to be high enough to achieve optimal photosynthesis, we achieve this by providing a warmer ambient temperature in the room.
The LED side is much more forgiving and will withstand the higher temps without struggling to photosynthesize and transpire through the leaf because its been overheated…
Lets recap on the LED Benefits….
The smell on the LED side is Noticeably Brighter, richer, and more complex than the HPS side.
The density was on point, it wasn’t airy or larfy at all
22.5% more efficient to run.
The bag appeal is Very nice and equates visually.
The Flavor translate a bit sharper on the palette from LED.
It was less expensive to run for the duration of the grow.
Easily I would Say that the Black Dog Led Platinum XLU light does beat out a standard 1000w HPS when you factor in Efficiency, Operating Cost, fruit Quality, and over all health of the plant.
I will continue to use this light and update with thoughts. Here is a picture of my current Black Dog LED Grow that i am experimenting with mixed spectrum.
Shown is Sour Tangie at 24 days
Get to http://www.blackdogled.com today and scope out their variety of lights and gear, and get Growing.
Until Next Time