Im going to buy a cool tube or a hood for my 600w hps. Can i get some advise on which one will cool better and what one will degrade light the least?
I was using a 400 w cool tube and it was pretty great. All depends on how your tent or grow space is temp wise. Not air cooled it’ll get pretty hot in there. With the air cooled tube I could get my plants as close as 8-12 inches to the plant without feeling much burn on your hand test. With minimum heat output to tent.