Viewing post #371844 by Leftwood

Roosterlorn said:.. So, I was running about an effective height of 7 to 10 inches above soil level or so throughout.

Certainly within good parameters, especially when using multiple florescent tubes. Really, it's not rocket science (although pot growers will disagree ), just being in the ball park is adequate. Nature's light intensity can vary hugely, even from day to day (sunny or overcast). But as a constant, if florescent lights were 12-15 inches above the leaves, IMO, that's not in the ballpark of good growth for lilies, even though they will grow.

I just didn't want anyone to get the wrong idea. It's like when people say how deep they plant their bulbs: is the depth they are quoting from the top of the bulb to the surface, or the recommended definition: from the base of the bulb to the soil surface. Right or wrong, my definition of "above the plants" is above the plants, not above the base of the pot that the plant grows in. So I am glad I asked.