hollaattheduns
Member
hey guys, i have a 4x4ft grow tent... just got a 400watt hps/mh light and the temps are climbing up to 90degrees. i have 2 4'' inline fans- 1 pushing fresh air in and one exhausing it out through a carbon filter. also have a 20'' box fan inside the tent mpoving air around. i think the problem may be that the 4'' inlines fans are not pushing/pulling enough air. an does using a cooltube help out alot? how much temp would go down using one of those? thanks!