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hi dr thanks again for the answer.Its simply so much easier to understand things in a dialogue than just by reading up stuff. Anyway, the thing is I am attempting to build a lighting system, and to provide ideal lighting. I am planninbg on using LED lights, and even I know they arent getting...

Hi dr.greenT and thanks for the reply. What about all this that about those vawe lenghts that are invisible to human eye being the most important and so on. I was sort of under the impression taht calculating just lumens isnt the optimal way. Sami

Hi I am an ambitious newbie looking for information on lighting. Firstly thanks for all the info posted on the forum, tremendous amounts of data is available. I am trying to find information to narrow down the elements (spectrum + amount of light) the ideal lighting requirements for growing...