What Distance Should My Light Be From My Plants?
For (artificial) light, there is a law that always applies known as the Inverse Square Law. It states that light diminishes exponentially in energy...
Can Black Lights Be Used For Growing?
Black lights will not work for growing cannabis. They do not produce the correct spectrum of light to grow plants. The only lights that...
What Are Light Cycles And How Do I Use Them?
The amount of time your garden should be exposed to lighting depends on what 'cycle' your garden is in. The 'Vegetative Cycle' of your garden...
What Is Photosynthesis?
It has long been known that the green part of plants, when exposed to light under suitable conditions of temperature and water supply, intake...
PAR For Plants, Lumen For People
While the lumens measurement is based on the sensitivity of the human eye to light, PAR Watts objectively measure the total watts of Photosynthetically...
Basic Info On Fluorescent Lighting
This is a compilation of basic information on fluorescent lighting that I have gathered over a period of several months. What is a fluorescent light? A...
How Do I Manipulate The Photoperiod For Larger Yields?
The only photoperiod manipulation from years of experiments that offered discernible improvements was this adjustment made for 1 or 2 calendar weeks at the...
How Can I Improve The Air Flow In Air Cooled Light...
How can I improve the air flow in air cooled light hoods? Like many of you, I use Hydrofarm hoods for my lights. I...
How Do I Build my own Cool Tube?
Configuration
This type of fixture is very versatile. There are many different ways it can be configured:
*hanging or mounted on a chamber wall
*open-ended drawing air...
Should I Use A Light Mover?
Light movers are mechanical devices that, as the name implies, move an HID in a fixed pattern over a garden. A light mover can...
How To Read Light Level With An SLR Camera?
Using your SLR camera in manual mode, you can measure light level. Set camera ASA speed to 200. Set camera shutter speed to 1/125....
How Can I Hang an Adjustable Reflector in a Box-Grow?
This if for those who have a small area or box that is made of wood, dry-wall, or other material that can use screw...
Metal Halide Safety And Fixture Recommendations
HPS (High Pressure Sodium) lamps can burn in any orientation.
MH (Metal Halide) lamps come in three basic types:
*Base up (BU), which must be operated...
Can I Use Foil on my Flourescents?
In a shop light type fixture, the bulbs are usually space a few inches apart. This type of reflector creates light "stripes" when used...
What Do All Of Those Lighting Terms Mean?
This glossary will help you understand terms commonly used in the world of lighting. AVERAGE LIFE - The life expectancy of a lamp, based on...
What Are Compact Fluorescents And How Can I Use Them For...
BASIC INFORMATION
Compact fluorescents are close relatives of the 4ft tube fluorescents, commonly used in shops and schools for their white, soft light that does...
420 Magazine’s Plant of the Month February 2024
Major props to our our member @Sparkey224 and his amazing BlackcherryBop plant.
@Sparkey224 gets the distinguished “Plant of the Month” badge and the...
420 Magazine’s Photo of the Month February 2024
Congratulations are in order for our member @gwhunran and his interesting photo of the month titled “Gold”.
These nuggets of joy are...
420 Magazine’s Nug of the Month February 2024
Props to our member @Jon and his frosty lil nugget of Skywalker.
@Jon wins the honorable “Nug of the Month” badge and the...
420 Magazine’s Grow Journal of the Month February 2024
Congrats to our member @Regrowth and his winning Grow Journal of the Month.
Check out his amazing work A Canuk Seeds Comparative Grow...
420 Magazine’s Member of the Month February 2024
Congratulations are in order for @Carmen Ray, our 420 Magazine Member of the Month!
@Carmen Ray receives the distinguished “Member of the...
