Placing plants on a table helps reflected light reach these lower branches and help the plant grow evenly with buds that will all be ready to harvest at once. Light saturation is the limit to how much energy is able to be processed by a leaf. Lighting that is more intense than the leaf can handle can result in photoinhibition, where photosynthesis becomes inhibited by the excessive light. Bleaching from light can also occur when there is too much light. Bleaching causes chloroplasts to turn white, so leaves lose their green color.
Plants can also get burnt when lights are placed too close to the canopy. In a 2012 study focused on determining optimal lighting power, 250–1000W/m2 high pressure sodium lamps were used in growing the cannabis varieties Early Pearl, Hindu Kush, Super Skunk, White Widow, Wappa, White Berry, and G1 by GW Pharmaceuticals. Yields were measured in grams per square meter (g/m2) and grams per watt of light (g/W). In cannabis foliage, this study found that light had no effect on foliage mass or foliage derived THC mass. In cannabis flower, the mass of flowers increased corresponding to increased light strength. Increase light strength also increased the ratio of flowers to foliage. Total quantity of floral derived THC increased with light strength.
A THC potency increase of up to 0.192% for each 100 w/m2 increase in irradiance up to 600 W/m2 PAR was observed. THC levels measured were 2.64% at 270 W, 2.53% at 400 W; 2.73% at 600 W. This is likely due to the fact that terpenoid (THC) synthesis requires more energy than synthesis of most other compounds in the plant. No benefit to plant weight was shown with irradiance levels over 300 W/m2 PAR, this could be the point of light saturation for cannabis. Grams of floral biomass per watt rose to 1.2 g/W when light irradiance was lowered to 400 W/m2 from 600, and to 1.6 g/W with 270 W/m2. The findings of this study supported a 2006 study predicted a floral yield of approximately 505 g/m2 dependent on light range of 300g/m2 to 800 g/m2. Overall, this research demonstrated how light quality can impact the quality of the cannabis plant. While irradiance over 300W/m2 do not add to the total weight and volume of plant matter, they can increase THC potency. When selecting grow lights, growers have many options to choose from and many factors to consider. Lighting commercial cannabis plants in grow rooms is very expensive. It may be more practical to light plants with lower irradiance, like 400W/m2, which have enough intensity to give THC a slight boost, but will have some energy lost that cannot be used for plant growth. If a grower is interested in propagating a particularly potent cannabis plant, they may see more success using 600W/m2 lamps. New York, NY: Scientific American/Farrar, Straus and Giroux. Effect of Light Intensity on Photosynthetic Characteristics of High Δ9-THC Yielding Varieties of Cannabis sativa L. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. wikiHow marks an article as reader-approved once it receives enough positive feedback. In this case, several readers have written to tell us that this article was helpful to them, earning it our reader-approved status. If you want to smoke out of a bong but you don't have one around, don't fret. You can make your own out of a water bottle using a few simple tools. Just make sure you're using it in a place where smoking is legal. Whether you’re on the go or need a disposable and discreet way to smoke, the ability to easily create your own water pipe on-demand is a great skill to have. Maybe you want to show off with your friends, or you just find yourself in a time and place that’s too perfect to not have a smoke sesh. We all know that glass pipes are great, but sometimes they’re not always accessible. Use these tips to create the gear you need at the drop of a dime!
Choose your favorite beverage to refresh yourself with, and save the bottle for this awesome trick. Luckily, the Primo Piece easily fits onto most types of bottles. Say hello to the easy to use, machine washable, travel-friendly piece that allows you to convert nearly any bottle into a bong. With a removable downstem and a bowl made out of the highest quality materials, the Primo Piece will ensure you’re never caught without a water pipe again.
Simply attach to any bottle top to get your next session started!