new here need advice

not growing till winter right now trying to get things together just bought a 1000 watt switchable cool tube money is tight question is what is the lowest cmf fan could i use on the cool tube also the same question for a carbin scrubber was wondering if i could use bathroom exhaust fans for both

bathroom fan far far far to weak to cool a light.

Most bathroom fans will move about 70 to 120 cfm air flow.

A carbon scrubber will slow the air flow.

The amount of CFM to cool the cool tube will depend on the ambiant temp, grow space etc etc etc

before putting any plants under the 1000 watt you might want to turn the lights on for a couple days, sort of a dry run and use the fan and watch the tempature where you think the tops of the canopy would be at.

The more powerfull the wattage the higher the tempature the lights give off

IMO I would want atleast 265 cfm airflow across the cool tube

found good dyi for the carbin scrubber on here didnt think would need that much cfm for cool tube but will go with your opinion since you have the experience and thanx for the ideal of the dry run didnt think of that