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hello what is the proper cfm needed to cool a 600w hps. i am thinking about getting a hor/vert. cool tube or a regular hood. the duct will be six feet long with one 90 degree bend on each side of hood straight up through ceiling. any help is appreciated.

what is the best 600 watt hps bulb to buy?

hello kinda new to growing, totally new to hydro/aeroponics. i am running GH micro and bloom at a 0-6.75-12= %75 of 0-8-16 @350ppm @.7CF.(442). it is dispensed to the roots through an ultrasonic humidifier. anyone growing in a simular environment? i am using 24" of air stones in around 4" of...