how high should a 600w mh light be above my plants?
This is what I was told a few year back “A good example is that you might be getting 1000 PAR Watts at 4″ from your light source, but that would change to 250 PAR Watts at double the distance (8”). This law makes it EXTREMELY important for indoor plant growers to get their light source as close as possible to their plants. The amount of light your plant receives is directly related to it’s yield/flower density.
