We lean towards LED lights. Why? Because they last 4 times longer. The prices of LED lights have come down over the past 3 years. They do not generate as much heat as traditional Lights. you can get the same amount of yield from an LED light for about 1/4 of the electricity used. We are not knocking HID/HPS setups as here in Oklahoma we can have some cold winters and these lights make a great heater and provide great light.
Click on a Manufacture to see their available lights
What is par?
PAR is the amount of light that’s usable to plants- those wavelengths that will be used for photosynthesis. Just like the difference between a growing area and a canopy, PAR is not the measure of all of the light a grow light gives off, but the measurement of the wavelengths plants will absorb.