Having a gentle breeze circulating through your grow room will improve the air quality - and therefore your plants - a great deal. If you’re trying to design an optimal hydroponics set-up, then a grow room circulation fan is a must-have. They work by replacing the carbon dioxide around your plants - circulating fresh oxygen - and help to prevent damaging hot-spots from forming under your grow lamps. Having a high quality circulation fan carries many benefits for your plants, including eliminating the risk of stagnant air, controlling heat and humidity, and emulating a natural growing environment for your plants; with wind and environmental factors encouraging them to grow deeper roots. Choose from a clip-on or wall-mounted fan if you’re limited on space, or a floor air circulation fan if you have ample room - National Greenhouse’s collection has a model to suit your grow room.