Grow Room Climate Control: Five Steps for Better Yields

Mike Steffes, R&D Scientist at Quest

Many growers who are just starting to make the transition from hobbyist to a bigger setup don’t realize how quickly an entire crop can go bad. Or, while not quite as catastrophic, some growers simply don’t know how much better their yield could be if they optimized a few more variables. Because most growers take pride in what they do (and the crop is quite valuable), mastering grow room climate control should be up-top on the to-do list.

My number one piece of advice to growers is to talk with your more experienced peers about perfecting grow room climate control. You’re not the only one who’s ever had the problems you’re facing. But I’ve spent a good deal of time — I don’t like to say how much time, let’s just say more than 20 years — working with expert growers.

Here are what I consider the key five steps to perfecting your grow room climate control.

1. Dial your light setup

Light isn’t something growers overlook when they think about plant health and indoor grows, but there is one element that can get missed: Most lights add a lot of heat to the room, so you really have to include that consideration as part of your climate control. Lighting dovetails with temperature control, and you’ll have to think all of that through.

While some growers are moving to LED lights, many are sticking with tried-and-true metal-halide and HPS (or high-pressure sodium) lighting systems, which can add a lot of heat and elevate your room beyond the 20-degree or so window that most growers aim to stay within.