GE Enhanced Performance High Pressure Sodium Lamp 600 Watt. Great for flowering. It uses state of th..
GE Enhanced Performance High Pressure Sodium Lamp 750 Watt. Great for flowering. It uses state of th..
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Mind Performance Projects for the Evil Genius: 19 Brain-Bending Bio HacksHave some evil fun inside y..
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"Her purpose here is to discuss and illustrate the four types of brain waves—beta, alpha, theta, and..