The inverse square law describes the intensity of light at different distances from a light source. When I see pictures of many large grows, the light appear to be 6 feet or more off the canopy, they seem to get the yields but it can't be very efficient losing all that light intensity and producing unnecessary heat.
I guess it's ok to ask what's the best light.. type or what, for what.. at least as currently on the market & I imagine every few months something new is around. But have you addressed that previously Me I'm a soil outside guy, but I'm cloning, growing still planting seeds now, I have an 4 bucket hydroponic system I bought last year I plan on using this winter after remodeling the room for it in this 173 year old New York farm house.. Taking donations lolo
P. S. I have 98% of the frame up on the New Harbor Freight greenhouse 10x12 .. Pondering how to heat it some composting I have plenty of chicken crap...
Professor Debacco, I recently bought a SE3000 led light by spider farmer. My cannabis plants are still growing leggy even when I follow the height instructions for the light. Its very bright in the tent I don't know why they would grow leggy even if the light is close to them. I have it dimmed at 30% at 16 inch height which is what the instructions say. What could be causing them to stretch so much?
Do you have a PAR meter? You could increase the light intensity. Have you added any nitrogen fertilizer? Are you growing the same variety? What lights were you using? If there is more red spectrum (vs. blue) this can induce longer inter-nodes (stretching of plants).
Could be the specific genetic you are running is just leggy. If you are running multiple genetics and still seeing the same thing across canopy then I’d ask about night and day temperatures in the grow space… a bigger differential between day/night temperatures is said to cause more stretching. I have used this light and did not notice any extra stretch from other lights I’m using .
One thing I found was that it took me around 3 grows before I actually got my head around the difference in using a LED light compared to the old 600watt hps that I more or less pick up and had beautiful results every time with. The old HPS used to give me around anything from 10-13 oz dried weight then I moved over to LED and I honestly thought I had completely forgotten everything I had picked up the first time around I didn’t even get 1oz dried weight you really need to take in the information but remember that everyone’s set up is different and just like nutrient companies give you their strength that you should use you never should you let that plant tell you what she wants. It’s more or less the same with a LED light what they tell you is not really what it is inside of your set up don’t be hard on yourself and when you finally get it sorted and not lost in all the information which can help completely confuse you you will slowly but surely get back to how things was before you changed over. One thing is like when you take the par reading try and do it from inside the tent with the door closed I used to take readings with the door open then just out of curiosity I got inside my space and did it with the door closed the difference was nearly 125-140. par that helped me out heaps. For what I though was perfect was actually way over what was required. Take all the knowledge you can get but remember everyone has a different set up. All the very best for your future grows and may you sus it out but when you do you will feel like a star once again . Best of luck getting it smooth sailing 😘👍
I found an app with which you can measure ppfd, you also have to choose the spectrum. With my expensive smartphone, the measurement is super accurate, but with my cheap phone, too little light comes through the camera and the measured result is far too low. Those gauges are super expensive.
The PAR meters are expensive so the goal here (and other videos) is to give growers actual readings that they can apply to their growing situations without purchasing an official meter.
Goal was to show to commonly used light wattage for each type, but you bring up a good point. Know any lighting manufactures willing to send some lights?
@@kannakiera8928 Just finished "Mr. grow its" video with the professor and started watching "DeBacco U" content, just wish you both had more of it. This community is in need of you two!
Thank you for the awesome knowledge watching from New Zealand 🇳🇿
Hope you can convert the inches to cm;-)
The inverse square law describes the intensity of light at different distances from a light source. When I see pictures of many large grows, the light appear to be 6 feet or more off the canopy, they seem to get the yields but it can't be very efficient losing all that light intensity and producing unnecessary heat.
Very good point, for more details look at this DeBacco University video... th-cam.com/video/gKaFHB0ss7Y/w-d-xo.html
This is great info would have liked to see some other lights in the comparison
If companies send in lights we can test them, but having a variety is a challenge with no sponsorships.
Full spectrum led is the way to go,I've tried everything
Wow the difference in values is massive, got a 308w LED blurple light and it's done me well, but I still think it's not enough..
Your thought process is correct, especially since it is a blurple not a full spectrum light.
Future , thanks .
You are welcome.
I guess it's ok to ask what's the best light.. type or what, for what.. at least as currently on the market & I imagine every few months something new is around.
But have you addressed that previously
Me I'm a soil outside guy, but I'm cloning, growing still planting seeds now, I have an 4 bucket hydroponic system I bought last year I plan on using this winter after remodeling the room for it in this 173 year old New York farm house..
Taking donations lolo
P. S. I have 98% of the frame up on the New Harbor Freight greenhouse 10x12 ..
Pondering how to heat it some composting I have plenty of chicken crap...
Great comparison provided here on DeBacco University... th-cam.com/video/mNQ5IrIVhZM/w-d-xo.html
Professor Debacco, I recently bought a SE3000 led light by spider farmer. My cannabis plants are still growing leggy even when I follow the height instructions for the light. Its very bright in the tent I don't know why they would grow leggy even if the light is close to them. I have it dimmed at 30% at 16 inch height which is what the instructions say. What could be causing them to stretch so much?
Do you have a PAR meter? You could increase the light intensity. Have you added any nitrogen fertilizer? Are you growing the same variety? What lights were you using? If there is more red spectrum (vs. blue) this can induce longer inter-nodes (stretching of plants).
Could be the specific genetic you are running is just leggy. If you are running multiple genetics and still seeing the same thing across canopy then I’d ask about night and day temperatures in the grow space… a bigger differential between day/night temperatures is said to cause more stretching. I have used this light and did not notice any extra stretch from other lights I’m using .
One thing I found was that it took me around 3 grows before I actually got my head around the difference in using a LED light compared to the old 600watt hps that I more or less pick up and had beautiful results every time with. The old HPS used to give me around anything from 10-13 oz dried weight then I moved over to LED and I honestly thought I had completely forgotten everything I had picked up the first time around I didn’t even get 1oz dried weight you really need to take in the information but remember that everyone’s set up is different and just like nutrient companies give you their strength that you should use you never should you let that plant tell you what she wants. It’s more or less the same with a LED light what they tell you is not really what it is inside of your set up don’t be hard on yourself and when you finally get it sorted and not lost in all the information which can help completely confuse you you will slowly but surely get back to how things was before you changed over. One thing is like when you take the par reading try and do it from inside the tent with the door closed I used to take readings with the door open then just out of curiosity I got inside my space and did it with the door closed the difference was nearly 125-140. par that helped me out heaps. For what I though was perfect was actually way over what was required. Take all the knowledge you can get but remember everyone has a different set up. All the very best for your future grows and may you sus it out but when you do you will feel like a star once again . Best of luck getting it smooth sailing 😘👍
Thanks
You are welcome!
aww and I missed it ;) oh well, catch you in the chat next time
Tried the Premier this time because of a viewer suggestion.
I found an app with which you can measure ppfd, you also have to choose the spectrum. With my expensive smartphone, the measurement is super accurate, but with my cheap phone, too little light comes through the camera and the measured result is far too low. Those gauges are super expensive.
The PAR meters are expensive so the goal here (and other videos) is to give growers actual readings that they can apply to their growing situations without purchasing an official meter.
U need a light par meter . There are good cheap ones on Amazon. Cheaper than the one she is using.
Should I add IR and UV to my grow light ? Will it make a noticeable difference ???
Not if other growing operational environmental conditions are not maximized. What light are you currently using?
Using the fc-6500 in a 4x4
With this light focus on growing practices as there is a good overall spectrum provided and consider adding CO2.
Try doing the test with 600 watts of Fluorescent light.
Or dim LED to equal watts.
Goal was to show to commonly used light wattage for each type, but you bring up a good point. Know any lighting manufactures willing to send some lights?
Curious about the difference with lights that have a dimmer switch.
Ideally, if dimming x% you can reduce the PAR reading by that % to give you a general idea at the different distances.
@@DeBaccoUniversity ahh makes perfect sense thank you
Kiera for the win.BTW can I use those bulbs for seedlings?
Kiera will appreciate this comment for sure, and consider clones and seedlings to have the same requirements.
W comment thank you 🥰🥰🥰
Yes.
@@kannakiera8928 Just finished "Mr. grow its" video with the professor and started watching "DeBacco U" content, just wish you both had more of it. This community is in need of you two!
I would love for her to be my teacher
In a way is this not true in this video?
is that led on 100% intensity ? those numbers don't add up if that is a 650w led
Yes this is full intensity no dimming.
It's 650 spread you can see the bars
A little unfairness with the LEDs majority have a dimmer to adjust the par, typically in increments of 25% but hey, what do I know?
No dimmer with this light, both at full power.
I need to lower my light!
Happy to help with practical information that can help improve your plants with no additional costs!
young lady should be wearing sun glasses