Chronicology 101

Anything and everything you need to know about growing marijuana.

Advanced Chronicology: CO2 Enrichment


Let’s start off by thinking about what plants need to grow. We all know that plants need sunlight and water to grow, and that they take in carbon dioxide (CO2) and give off oxygen. However, you can’t overlook that fact that this CO2 for oxygen exchange is vital to plant growth. If you are growing outside this is something you never have to worry about, but it could be the difference between smoking you and your friends up when you harvest your plants or supplying your whole town.

For smaller grows, such as one or two plants, good ventilation provided by a fan should be sufficient in ventilating the grow space and maintaining sufficient levels of CO2. However, bigger grows or grows going on in small spaces will benefit greatly from a CO2 boost.

We recently visited a growing operation in the Garden State that was using CO2 enrichment. If you’ve ever grown before, it makes the difference between having a nice flower garden or a rainforest growing in your basement.

Some important thing to consider are that , your plants will only require CO2 enrichment when photosynthesis is occurring (when the lights are on). And, you should stop CO2 enrichment half way through the flowering stage. CO2 enrichment only contributes to tissue growth, not resin or TC production, so providing extra CO2 during flowering will cause your plant to focus more energy on tissue growth than on bud growth and resin production.

We need to research several methods of CO2 enrichment before we delve more into this topic, because we have heard that it may be possible to use dry ice to provide extra CO2. So, we will be looking into this, and updating the Chronicology section with the new information later this week.  

Commercial Medical Marijuana Grow Using Illuminator LED Grow Lights


LED grow lights have made quite an impression over the last few years. The evolution of the industry has been breathtakingly fast – taking only a few short years to go from industry pariah to what is now the gold-standard for indoor growing. One look at this video will put to an end the thought that LED grow lightscan’t really produce dense bud when flowering medical marijuana.

What this video shows is the inside of a legal, commercial medical marijuana growing facility in Colorado. You get to see a glimpse of how impressive the facility is and, more importantly, the results of a full-scale medical grow using 100% LED.

Nowhere are you going to find video of this kind of grow using any other LED grow light. What they have used in the video is a combination of the 90W and 180W Illuminator lights to completely cover their grow space. On average, each light covers a 2×2 square foot area which allows for excellent use of coverage space per light as well as a bit of overlap. When you overlap the spectral output from several smaller lights, you get a yield boosting effect that can increase production over fewer high-powered lights for about the same cost.

Aside from the obvious that LED grow lights can in fact grow cannabis on a commercial level, I want you to pay special attention at about minute 5 to 6. Note that the operation of outfitted at a cost COMPARABLE to the cost of using all HPS.

What we found was that, although the individual LEDs cost a little bit more than outfitting this facility with traditional high pressure sodium lights, we took into account the additional requirements for at least double the electrical usage. Having to upgrade ourelectric panel and transformer, to install massive air conditioning units to keep the heat down, to install venting that was to code, and run air cooling through the lights . . . at the end of the day, what we found was that our budget for the build-out was comparable.

Of course long term energy savings and product quality will mean that this facility will make back its investment within about 18 months. So can we finally throw out the tired notion that LED grow lights can’t produce and just get rid of high-cost HID lighting??

Article provided by My Hydroponic Gardening

Chronicology 101: Will ice water turn pot purple?


Well the short answer to this question is NO. A longer answer is that, watering your plants with ice water is more likely to shock and kill them than it is to turn them purple. But, either way, the answer is NO.

The problem with feeding your plants ice water or extremely cold water is that it will shock the roots. This is the same thing that will happen if you feed your plants extremely hot water. Additionally, feeding your plants water with to many dissolved solids will cause them to absorb less than desirable amounts of any fertilizer you may add to the water, this is more important for hydroponic grows than soil grows though.

The reason that turning down the temperatures in your grow room is effective at turning your pot purple is because it causes stress to the leaves and the buds of the plant. So, stressing the roots is a good way to stress the roots, duh, but not a good way to stress the buds. Decreasing temperatures, especially during dark hours, is a tolerable form of stress for most strains, because this is very similar to outdoor/natural growing conditions.

You need to consider that stressing your plant will have an effect on the overall quality of the finished buds. If you are growing for yourself, well then you want to have the best product possible. At least, I hope you do. And, if you are growing for someone else (i.e. a dispensary or to sell to others) well they are more likely to appreciate the fact that your pot knocks them on their ass than that it is purple. I mean, the best weed I ever smoked was green, I’ll put that out there. We called it The Truth.

Let’s see. High. Rambling. What else do I need to cover here?

The quest for purple pot reminds me of something that some shady dealers and growers will do to make there pot appear to be of a higher quality. I feel like it doesn’t happen so much anymore, but I have heard of people spraying pot with a light layer of windex. When it dries it appears as though the pot has more crystals on it. The bud will taste different, but not terribly so. If you don’t believe me, try it for yourself, but I don’t recommend it by any means.

Additionally, you could probably die the buds purple by spraying them or feeding them purple die. But, again, if you have some put you on your ass shit, no one will care what color it is. And, that’s the truth.

If you really want to turn your pot purple, click here to access our article Chronicology 101: Making Your Pot Turn Purple.

Chronicology 101: Addressing Your Lighting Needs


Red light. Green Light.

Recently, someone asked us “What is the best way to light marijuana?” We thought of 3 ways you could do this. There is the most common way which is to use a lighter, the more traditional route with matches, and the ultimate earth friendly option of using a magnifying glass. Okay, so starting the post like this seemed much funnier before we actually wrote it.

In all honesty, we were asked if marijuana does exceptionally well under certain colors of light. We were able to rule out the color green pretty easily, because plants our green. Everything we see appears to have color because that is the light which is reflected by the object. Plants, in particular marijuana plants, are green because the reflect, and therefore do not absorb green light.

All the colors of visible light have a wavelength that fall within the range of 400 and 700 nanometers (nm). Green light has an approximate wavelength of 510 nm. Very similar in wavelength to green light, is yellow light with a wavelength of 570 nm. Red light has a lower wavelength and blue light, higher.

The red a blue wavelengths are needed by plants in order to produce chlorophyll A and chlorophyll B. This is why the LED grow light set ups have red and blue LED’s. Unfortunately, these lights are not very powerful.

We recommend using an Eye Hortilux bulb in your set up. Metal halide bulbs have more blue spectrum light and are better for vegetative growth, while high pressure sodium lights produce more red spectrum light and are better for the flowering stage. Hortilux produces both, and we recommend them on the basis of their customer service, warranties on their products, and because they are proudly made in America.

If you have any further questions, or need clarification on anything we have said, please feel free to cnatact us by posting a comment to this post or emailing us at

Jah bless!!!


Chronicology 101: Cannabis Climate Control


As a follow-up to our article Chronicology 101: Making Your Pot Turn Purple we thought it would be wise to mention several things that every ganja farmer should consider. While these tips primarily pertain to indoor growing operations, these are all talking points for outdoor grows as well.

Massive Indoor Grow

The first thing is that you want to make sure your plants have plenty of humidity. Marijuana is no cactus. Nature, Jah, or whoever did not design it to grow in the desert. All plants absorb water and nutrients through their leaves. If there is no humidity in the air, then you can understand why your plant will dry out. With this considered, misting the leaves of your plant with a mild dose of nutrients in water can be a wise way of giving them some additional fertilizer and needed nutrients.

Also, the temperature that your plant is subjected to can greatly affect its growth. High temperatures will cause the stems to elongate, while cooler temperatures will cause the stems to be shorter. Most strains will practically halt growing under 40 degrees Fahrenheit, while some are frost resistant. The ideal temperature for growing is 70 degrees F, but anything within the range of 60 to 85 degrees should be fine. Seeing as plants’ metabolisms slow down with colder temperatures, it is also true that higher yields can be obtained at higher growing temperatures. Growing at higher temperatures will only produce higher yields if more light is provided, which if you know much about growing marijuana makes a descent amount of sense.


Now, in our last article we mentioned dropping night time temperatures in order to make your pot turn purple, a.k.a. to get that purp. The plant should only be subjected to these conditions during the flowering cycle, since you want to maximize the growth that will occur during the vegetative stage of growth. However, since the plant grows a considerable amount during the flowering cycle you will be sacrificing yield for color. The color of your weed is pretty much irrelevant compared to quality, which should be the concern of amateur, professional, and commercial growers. But, stressing your plant into turning purple through temperature manipulation won’t really effect the quality negatively or positively.

Beyond that, remember to provide plenty of air flow and ventilation for indoor grows. Use an oscillating fan, an exhaust fan, an air conditioner, a humidifier, a tower fan, one of those new fangled no blade Dyson fans, or whatever you have to. As you know plants need CO2 to grow, which we will focus on in an upcoming article, so maintaining good air flow is necessary for indoor grows.

Other considerations you might want to make, are filters for exhaust fans, an air conditioner for intake fans, and as we just brought up CO2. If you have any questions feel free to contact us, and we will forward your request to our correspondents in the marijuana cultivation industry out in Colorado. Thank you to all our fans for your continued support in our campaign to bust marijuana myths. We hope you found this informative.

Jah bless!!!




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