I'm def saving up for a T5 setup. You are very right: "Jorge Cervantes ...I am not going to argue with him!" One of my primary concerns is heat. I have a MH and HPS system, 4ea 65w multi-spectrum CFL's and a bank of 16 CFL's (25w) but I'm looking forward to the cooler, more energy efficient T5's. Like Jorge said "Light diminishes to the square of the distance"; that's an extremely important fact. If you can safely put your plants an average of 8" from your light but only 20" from your HID, that's a foot difference. Using 250w as a standard, a 27,500 lumen bulb (regardless of the type) gives 19,695 lumens @ 8". At 20" the lumens drops dramatically to 3,151. It makes perfect sence to me. As I understand it, the spike in someones electricity bill is usually how someone gets caught. Using T5's will give you more lumens on the plant than anything in the ballpark with an HID system - and a lot less heat.
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