HighWaterMark
Well-Known Member
I'm building a "perfect" sealed CEA grow op. The flowering room will have a 250ft2 footprint (10'x25') with 8' ceilings. It will have two rows of 4 air-cooled 8" vented hoods (inline - 1000W HPS lights) with the air coming from and exiting to somewhere else (lung - topic for another thread). Safe to say the air is not coming from or returning to the flowering room. Of course, the air is being moved by an 8" inline fan. Other consideration:
1) room is CO2 enhanced.
2) room is temperature and humidity controlled.
3) room is light-cycle controlled
4) media is soil-less and room will be antiseptic as is reasonable
5) A/C is likely ductless mini split and particulate matter will be reduced by a separate Activated Carbon Filter
Given the above 5 considerations, what's a good rule of thumb for the 8" inline fan's CFM to properly cool my line of four hooded 1000W lights? Do those experienced in sealed grow rooms think in terms of CFM/1000W light regardless or in terms of increased resistance, heat and finally, increased air flow needs of four hooded lights in a ducted line?
Last question - re increased vs decreased air pressure in each hooded lighting assembly, do y'all prefer to push or pull the air (respectively) with the inline fan?
1) room is CO2 enhanced.
2) room is temperature and humidity controlled.
3) room is light-cycle controlled
4) media is soil-less and room will be antiseptic as is reasonable
5) A/C is likely ductless mini split and particulate matter will be reduced by a separate Activated Carbon Filter
Given the above 5 considerations, what's a good rule of thumb for the 8" inline fan's CFM to properly cool my line of four hooded 1000W lights? Do those experienced in sealed grow rooms think in terms of CFM/1000W light regardless or in terms of increased resistance, heat and finally, increased air flow needs of four hooded lights in a ducted line?
Last question - re increased vs decreased air pressure in each hooded lighting assembly, do y'all prefer to push or pull the air (respectively) with the inline fan?