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  1. fujiyama

    Understanding CFM (speed controllers)

    I'm using a fan rated 315 CFM with a carbon filter rated 400 CFM.. can I dim the fan down to 35% with the speed controller? I don't fully understand how CFM works with carbon filters. At 35%, the fan is only pulling about 110 CFM through the 400 CFM filter. No problem, or should I crank the...
  2. fujiyama

    Amature build

    You've all inspired me to build a light (and grow space) of my own; check it out and follow my progress. :leaf: Goals: Even light coverage Energy efficient Simple (minimal plugs, timers, etc) Versatile I've decided to use 1 cob per sq. foot and design a frame suitable for a 2x4 room. I...
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