How much cfm do i need ???

hello everyone! Soon i want a buy a new 150w hps grow equipment and i want to know how much CFM's do i need too cool down the bulb. My grow space is 40x50x80cm help me please

Sorri for my shitty eng

Idk how the hell you're going to grow in a space that small...but you have 5 Cubic ft of space, 150w don't really generate TOO much heat so probably somewhere in the neighborhood of 50-60CFM should get the job done, if not a little over kill

its not my first time growing in that box I've seen people who grow in PC cases with hps, that's extramly anyway thanx today i will try to get some more coolers

The basic rule of thumb in a non-CGE grow is to exchange the volume of air every minute as a minimum for the plants to get enough CO2. But in a small grow like this more is better, especially since heat builds up quicker in a more confined space like that.

Ive seen lots of peeps use 120mm computer fans for small grows like that and they seem to work perfect, hope this helps

Peace out

thank you ^^