What is the average lumen per watt ratio of an HPS and MH?
A. HPS – 140,000 lumens per watt MH – 100,000 lumens per watt Fluorescent – 83,000 lumens per watt Mercury Vapor – 63,000 lumens per watt Incandescent – 17,500 lumens per watt Back To Top • Q. What is the definition of PAR? A. PAR stands for Photosynthetically Active Radiation Back To Top • Q. What is the PAR value? A. PAR value is the amount of light usable by the plants Back To Top • Q. When the lights are off what’s going on with my plants? Obviously they don’t just sleep so what do they do? A. In the dark cycle the plant shifts its focus from leaf production to root production. The leaves transfer extra stored energy down to the branches and roots. The plants dark cycle is very important. 24 hour light cycles are not the way to go despite radical theories and tests. Back To Top • Q. How high should my lights be from the tops of my plants? A. The lamp should be 18 – 24 inches away from the tops. Use an oscillating fan to circulate air on the tops of your plants. This will help with
