no i have two inside the chamber one sucks in ther hot air and the other one blows it out a coco filter and then i have two inside the canopy blowing the hot air through a 4 inch exhaust hole the co2 stays on for one minute 3 times a day. when i flowered the plant there was no root boung to my knowledge there pretty bright white with no sign of alge and i have two air stones constintaly flowing.