i have 2 Mechatronics 120mm AC fan's #UF12A12-BTSLR, 57 cfm,i am in need of info regarding using fans in series,right now i am using them both,1 for active intake,and 1 for exhaust,my lights(3-42 watt and 3-23 watt) are on 24/7 vegging,in a few weeks i want to switch 2 12/12,i would like to set up a homemade scrubber with the carbon i bought,i want to utilize both the fans for out take pulling thru my scrubber. how would stacking 2 fans work? would it work? does it make sense to do? is side by side better then stacking? ok,hope to hear back from ppl who know,ty