Watts/Sq. Ft.

fanleaf;3058066 said:

Cannabis is a light demanding plant. Heres how you can easily figure out if "this will be enough" light. All LED light manufacturers give you 2 wattage measurements. 1 measurement is the advertised wattage which for example if a particular Led light uses 3 watt Led diodes and their is 100 of them in that light then it would be advertised as a 300 watt light. This is very misleading because yes 100 LED's times 3 watts each equals 300 watts however if they were actually ran that hard there life would be very low. So you have to look further at their actual wattage used. For instance almost every 300 watt Led will have an actual power draw from the wall of 170-180 watts those details can be found by reading a bit further into the power requirements given by the manufacturer. That is the wattage you should concern yourself with. Now next you need to look at the square floor footage of your tent. Let's say for instance that your floor footage in your tent is 3 foot by 3 foot. To get the square footage you would multiply the length times the width so three times three is nine square feet right? Now that you know your square footage is 9 you need to figure out how many watts of LED power you need. None of this is exact but 35 - 50 actual watts per square foot is where you want to be. So if you take 35 Watts times 9 square feet you know you need a bare minimum of 315 actual watts, not advertised watts to do a real good job. Now if you wanted to be on the higher end of that to try to maximize your yield if you take 50 watts per square feet x 9 square feet you will need 450 Watts in that 9 square feet to provide 50 watts per square feet. Please remember the difference between advertised wattage and actual wattage. 35 watts per square feet is on the lower end 40 to 45 watts per square feet would be really nice and 50 watts per square feet is considered by some to be optimal to maximum. With growing cannabis always remember if you go cheap you will grow cheap. Mars Hydro especially Sarah from Mars Hydro will easily take care of you to get you on your way to Growing some quality stuff.

Sent from my android from outer space!

Click to expand...