Try cooltube.... I got my setup like this; Filter -->VK 125mm --> cooltube --> Out. I grow in a grow tent, Secret Jardin 120x120x200cm, and my temp is around 25-27C (77 - 80F).Anybody know a good easy way to keep temperature down inside my growing room...temps are rising outside and now its just not enough to draw air from the outside...My grow room is 150cmx120cm Please help...Peace