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Hi Chase, If we can come to a meeting of the minds, I am interested in sponsoring your project with free materials, design ideas and more. (Ron, CEO, fasterharvest.com) In return, I would want access to your results. This implies much more than lighting... for sure would include: 1) Automated...

Every time you turn on a CFL of any brand, you are seeing the magic of a mix of blue, green and red phosphors to make white... the common term is tri-phosphor. A 2700K is primarily green phosphor with the balance of blue/red to be more red. A 6400K is primarily green phosphor with the balance of...

White light is typically made by mixing blue, green and red... - So if you have HPS, add blue light when you are working on the plants... this will make white. http://www.amazon.com/PowerBLUE/dp/B00YELLHP8 - So if you have purple light, add green light when you are working on the plants...

Agreed, this is the reason I keep saying "IMHO". More research is needed to prove one way or the other. What is crystal clear from the study is that using manufacturers recommendations, the BLM 1200 Spyder produces a butt load more GPW using a targeted spectrum that about 10% blue, 86% red and...

This study shows a BLM 1200 LED using much less watts than double ended HPS growing significantly more weed: Here is the BLM spectrum used: https://cdn2.bigcommerce.com/n-pktq5q/qzuvsqy/products/136/images/450/BML_GROW_MAX_Chart__27274.1412972277.1280.1280.jpg?c=2 My guess is the spectrum is...

I will be coming out with a UVB augmented Grow Light later this year. I am designing it to be run 3 hours a day to provide a tropical equivalent daily dose of UVB. Nice pic. First time I've seen trichomes on small seedlings. Have you ever tested the amount of THC in your grows?

If you noticed, one of the scientists on the green light research study I attached was from NASA. The paper you attached was an opinion paper, not research. While that does not make it good or bad... opinions are like assholes, everyone has at least one. In my opinion, research is needed that...

IMHO, the simple answer is that HPS has a high percentage of green spectrum light and over 24% the green light is ignored/reflected by the plants... this is the reason plants are green (see attached study). LED fixtures have the ability to "target color spectrums". Most LED fixtures sold have a...

You might consider VeggieMAX and FlowerPOWER lights at WeedBulbs.com. The efficiencies will be greater.

Someone asked where the chart came from. It is an image on the page... http://www.tastyled.com/default.asp

Hi Trippy and All, While your thoughts are logical... "you want to do an apples to apples comparison of various manufacturers at various PPFD in the real world", there is no simple way to do this using manufacturer supplied PPFD because: PPFD IS A "SPOT MEASUREMENT" To have something...

Painting your lamps or even buying colored bulbs is like wasting most of your wattage. Instead try these lamps that output using targeted color phosphors: http://www.amazon.com/dp/B018PSHMYU (Mostly red with 10% blue) http://www.amazon.com/dp/B00YELLHP8 (Mostly blue)...

What are Myco's?

What this means is that your bulb is "filtered" red. This means that under the filter (ie if you scratch it off) the light is white and the filter is only allowing red color to escape. You are losing all the other color which is simply being blocked. With this type of bulb, white when off and...

What color is your red bulb when off... white or red?

I have not seen an LED that outputs UVB with a peak in the range of 310-312nm. If you don't get this range, you are wasting your money. UVB will not pass through plastic and standard glass. Glass needs to be quartz or gao ping. UVB will give a suntan or sunburn. Just like in bright sun, you...

I am an oem manufacturer and can tell you this is quite common (WeedBulbs.com). This screwy practice is referred to as marked watts and actual watts. Our lamps are 24 to 26 watts depending upon slight variances of manufacturing... we mark them as 24 watts.

I would think the main light leak will be between the two doors. To stop it, you will need a "lip" attached to one of the doors. I simple lip would be to get a wooden meter/yard measuring stick from the local hardware store... in the US, these are typically given away for free. Cut it to size...

If you are always using autoflower seeds, then I see no reason to restrict to 12/12... probably consider 20/4... this will produce more weed in the same space. Why three fans? I am thinking one should do. Also don't see the need for a fan controller... just operate full speed, 24/7. You can...

The best info for growing aquaponically is at friendlyaquaponics.com... sign up for their newsletters and look at old ones. They (Tim Mann and Susan Friendly) teach courses on commercial aquaponics... I just went to such a course last week. Tim has tried growing cannabis in his system, but...