Only LED grow lights are purple. And only some. Why are they purple? Well, technically they aren't. The light appears purple due to the differently colored diodes in use: mainly blue and red. This pinkish/purplish glow has also been dubbed "blurple", a term that is often used in a somewhat derogatory way these days. Why is that? Because many of the earliest LED … [Read more...] about Why Are Grow Lights Purple? (And Are “Blurple” LEDs Effective?)
Grow Light Advice
Determining what size grow light you need can get a bit complicated. It depends on so many different factors: the type of lighting you want, the plant(s) you are growing, the size of your grow area, etc. In this article, I break the issue down and make it as simple as possible. There are three things you need to know before beginning: the light requirement of your … [Read more...] about What Size Grow Light Do I Need? (The Simplest Way To Figure It Out)
There are two reasons you might find yourself here. One: you have questions about metal halide grow lights. If that is the case, read on. Everything will be answered. Two: you are looking to buy metal halide grow lights. If that is the case, you won't find help in this article. But you will find it elsewhere on this site, namely: If you are interested in a full … [Read more...] about Metal Halide Grow Lights (Everything You Need To Know)
Just about any light can flower plants. But most don't do it well. And a very select few are optimized for flowering. The good news is: you can get great results with lights that are not ideal for flowering. Even with lights that are pretty bad at flowering. If you already have a light that does well, but is not ideal, you can boost yield quality and quantity by … [Read more...] about What Bulb Is Best For Flowering?
Are COB LED grow lights really better for growing plants? That's not an easy question to answer with a simple yes or no. But I can tell you this: they are very good at both growing and flowering plants like cannabis. Better than most alternatives, that's for sure. In this brief article, we will take a look at why COBs are so great and also make sure you know which … [Read more...] about Are COB LED Grow Lights Better For Plants?
Do people still use high pressure sodium grow lights, given all the hype around LEDs Yes. Definitely. HPS lamps have driven the indoor cannabis cultivation industry for decades. They work and they work very well. While the top quality LED lights can now match, and perhaps even surpass, HPS lamps, many long-time marijuana growers still prefer the traditional lighting … [Read more...] about High Pressure Sodium Grow Lights: Which Brands Are Best?
I get this question a lot. Everybody wants to know how many CFL bulbs are needed per plant. But how can you answer that without a little more info? I mean, how large is the plant? What is the wattage on the bulbs? In order to accurately tell you how many CFLs for one plant, I need to know those two variables at least. That said, I can still help, even without … [Read more...] about How Many CFLs Per Plant (Using Watts And Size)?
Why make a dimmable ballast if not to dim it? True, but it depends on how you use the dimming function. Using it to dim down a bulb, for example to run a 1000w watt bulb at 600w, is not ideal. We delve into why that is below. The better use is to dim the ballast down to 600w and then use it to run an actual 600w bulb. That is the big advantage of a dimmable … [Read more...] about Should I Dim My Ballast? (Learn What Dimming Does To Bulbs)
You know why there is so much confusion? Because they're very similar. When it comes to plant growth and development, the action spectrum for photosynthesis and the absorption spectra for chlorophyll and other molecules used in photosynthesis are nearly identical. Are there any differences then? Yes, of course. If they were the same, there would be no need for … [Read more...] about Absorption Spectrum Vs Action Spectrum: Differences Explained
The short answer is: Blue light. But it's not quite that simple. For one, plants grow great in natural sunlight. Sunlight isn't blue. It is...yellow? White? Wait, what color is sunlight, exactly? That's a bit of a trick question. Sunlight contains all colors of the light spectrum. Technically, that makes it white light. This means it contains blue light. … [Read more...] about What Color Light Do Plants Grow Best In?