Now, let’s take the first question from above and tackle plants that flower and those that don’t separately.
When it comes to T5 lights, I always recommend the AgroBrite fixtures from Hydrofarm. Check out my AgroBrite review to see why I prefer these lights.
There is no need to get a specialized (and overpriced) grow bulb. They’re basically the same thing. It’s just a way to get more of your money.
During flowering, ‘warm white’ bulbs are ideal, with a color temperature of 2700K to 3500K.
The second and third questions will be answered naturally as we go along.
The answer is simple.
When the plants have grown enough to begin fruiting or flowering, they need more light than before and they prefer a warmer light, i.e. light that contains more red.
So what type of light do your plants need?
These bulbs will work fine for all stages of growth. In reality, any bulb will work for any stage, but using bulbs that provide the right kind of light yields much better results.
The short answer: any type of fluorescent light helps plants grow. But it's not that simple. There are a few things you need to be aware of to avoid…
600W HPS lights are the most popular form of HID lights because they provide a good balance between how much light they produce and how much electricity they use.
Growers that want to grow using HID lighting can usually get complete sets that include the bulbs, ballast and a reflector.
Cannabis cultivators know how important light is when it comes to growing successfully. A sufficient amount of the right type of light is one of the most crucial factors for healthy growth and yields of potent buds.
Just a few years ago, LEDs were not suitable for any “serious” grows aside for providing light for seedlings or clones. However, LED technology has come a long way in recent years.
When compared to other types of lighting, the initial costs for LED grow lights can be steep. High-end grow LED fixtures with modern LED modules can easily set you back thousands of Euros. On the other hand, if you plan to grow a lot, the lower running costs of LEDs, and lower temperatures can make good for your initial investment over time.
HID (High-intensity Discharge) grow lights are somewhat of a golden standard in the cannabis growing industry. Many growers swear by HID lighting and believe that they give the best and biggest yields.
Powerful HID lights in the 600W range or more can produce big amounts of heat. This means you will need adequate exhausts and vents in your grow room. Also, because HID bulbs degrade over time, their life span is somewhat limited. You will have to replace your bulbs periodically. Some growers get new bulbs every year while others grow with them a little longer.
Their availability and low cost are among the advantages of CFL grow lights. These bulbs have standard sockets so you can use them with any standard light fixture. Commonly used CFLs for growing cannabis range from 40W and upwards. They are available in various colour temperatures such as “daylight” at 6500K or “warm white” with a more reddish light spectrum at 2700K. Bulbs with a “daylight” spectrum are more suitable for the vegetative growth phase while “warmer” CFLs with their more reddish light are better for the flowering of your plants.
The light output of CFL bulbs is low compared to other types of grow lighting. You will have to put the CFL bulbs very close to your plants if you want to provide them sufficient light. Unless you are willing to use a number of CFL bulbs, CFLs are normally better suited for smaller grows, say if you only grow one or two plants. On the other hand, “day light” CFL grow lights can be the ideal grow lights for clones and seedlings.
We compare lights suitable indoor cannabis cultivation, with their pros and cons. What lighting solution is best?