Hiya,
I'm currently making my first grow box, its quite small, the dimensions are something like 0.5 x 0.8 x 1.2 meters, or 1.5 x 2.5 x 4 feet.
To ventilate the area im going to use 2x 120mm pc fans as a exhaust and passive intake, the fans can run at two speeds either 21.5 CFM or 36 CFM. Which would give an airflow of maximum 72 CFM.
the box is a totalt of 15 cubic feet which gives almost 5 airchanges per minute when the fans are on full speed and roughly 2.5 airchanges per minute when on low speed.
correct me if my math is wrong by the way!
i plan on scrogging in the box and i will make the passive intake holes beneath the scrog screen to get as much airflow through the plant as possible, the exhaust will be at the top of the box.
I will be growing two lowryders and one larger plant(not sure of which one yet northern lights or a cheese i think) in two DWC buckets.
now to the question, im currently in the middle of ordering lights for this box, and im considering a 250w CFL with a reflector etc, but i would prefer a 250w HPS but im not sure if the heat will be a problem with the HPS light? i know ambient temperature is important but is my box even close to beein able to handle a hps light?
the hps lights dont make any sound right? or the ballast?
any ideas for a lighting solution would be appreciated.
I can unfortunatley not increase the ventilation as there is no room and i want to keep the system as quiet as possible as it will be in my bedroom, hopefully the fans will live up to their 9 / 19 decibel promise!
peace!
I'm currently making my first grow box, its quite small, the dimensions are something like 0.5 x 0.8 x 1.2 meters, or 1.5 x 2.5 x 4 feet.
To ventilate the area im going to use 2x 120mm pc fans as a exhaust and passive intake, the fans can run at two speeds either 21.5 CFM or 36 CFM. Which would give an airflow of maximum 72 CFM.
the box is a totalt of 15 cubic feet which gives almost 5 airchanges per minute when the fans are on full speed and roughly 2.5 airchanges per minute when on low speed.
correct me if my math is wrong by the way!
i plan on scrogging in the box and i will make the passive intake holes beneath the scrog screen to get as much airflow through the plant as possible, the exhaust will be at the top of the box.
I will be growing two lowryders and one larger plant(not sure of which one yet northern lights or a cheese i think) in two DWC buckets.
now to the question, im currently in the middle of ordering lights for this box, and im considering a 250w CFL with a reflector etc, but i would prefer a 250w HPS but im not sure if the heat will be a problem with the HPS light? i know ambient temperature is important but is my box even close to beein able to handle a hps light?
the hps lights dont make any sound right? or the ballast?
any ideas for a lighting solution would be appreciated.
I can unfortunatley not increase the ventilation as there is no room and i want to keep the system as quiet as possible as it will be in my bedroom, hopefully the fans will live up to their 9 / 19 decibel promise!
peace!
