How To Control Humidity When Growing Indoors

Important to understand humidity When Growing Indoors

Today, we’re gonna talk a little bit about humidity and controlling humidity in your greenhouse or in your warehouse growing operation. The effects of core humidity management is a lot of time when you end up with humidity ranges outside of the ideal. Different crops prefer different humidifies, and they function differently in different humidifies. Additionally, if you have different humidifies, sometimes it impacts the final product, not just the growth of the plant. It’s really, really important to understand home humidity control, what your humidity is, and be able to manage your humidity within a certain range in the growing environment. For most growing environments, optimal humidity levels for most crops will range between like 85% humidity and 60% humidity, somewhere in that range. Most crops fall in the 75, 85 percent humidity range, ideally, but a lot of crops are very comfortable exceeding that.

A lot crops are okay going under that. When things get too humid, and too humid again is a very subjective term,but if things are too humid and you’re starting to see disease or fungal pathogens show up on your plants, and you’re struggling with some of these issues, you probably got a bit of a humidity problem, and you need to know how to dehumidify. There are a lot of ways to do this. If you look at a dry environment, then oftentimes air exchanges will take care of the problem for you, or you can rely on air conditioning, which dehumidifies by condensation, or you can use an industrial dehumidifier, or even a home and hobby dehumidifier for a smaller operation. A lot of folks ask about cooling walls. Well, cooling walls, swamp coolers, that kind of thing, they work in really dry environments, because they’re dumping water vapor into the air, right?

What does the work humidity in dry moment

That’s why they work, which means that their actually adding humidity to the air. That’s typically why they’re not super effective at very high humidity levels, and why they work so well in dry environments. Those types of cooling things, typically, if you’re growing in a greenhouse that uses a cool wall effectively, you probably don’t have a humidity problem, ’cause you’re already in a place with really low humidity. Humidifiers and sizing them can be a really tricky subject, especially when it comes to plants. In traditional engineering, they know how many people will be in a building exhaling, they know what the humidity level of your breath is, they know what the humidity levels outside are from season to season, they know all of the different things that are contributing to humidity in that environment. But indoor growing is such an early industry that it’s really pretty up in the air as to how much water plants are oftentimes dumping into the atmosphere. This can be a pretty tricky subject, but if you’re already growing indoors, you know how much water your plants are consuming, right, because you’re having to top off your sump tank.

What size of best humidifier you need?

The difference that you’re topping off your sump tank, a significant amount of that is just transpirational losses from your plants. So they’re just dumping that water into the growing environment. That’s usually a good place to start. We also have some humidity  and some water vapor calculators on able for doing CO2 based vapor, basically pounds of water type calculations. That can really, really help with narrowing down what size of humidifier you need. By and large, with our Zip Farms with what we do, we tend to use one fairly large industrial indoor humidifier for about every 500 square feet, and that’s usually more than enough to take care of our humidity problems. You’ll almost never need to humidify an environment, because the plants acts as their own little humidifiers, right? What you need to worry about is de-humidification. When it comes to sizing a dehumidifier, it can be pretty tough proposition. I would recommend starting by getting a hold of us or one of our folks, explaining to them what you’re trying to do, how many plants you’ll and we do have some calculators that we’ve built internally that allow us to do some rough estimates of how much water vapor your crops are gonna be producing.

Make sure sensors placed in our growing environments

You don’t usually have to humidify, because every plant is just constantly losing water, and in fact, we’ve got sensors placed in our growing environments, and the moment we turn on the lights, the humidity spikes. Why? Because in order to participate in some of these photosynthetic activities, all of the cells in the plant basically start to consume water, so they’re pulling water up, and we’ve also got the stomates in the plant opening so that there can be gas exchange, and in that process, a lot of that water the plants are pulling up just turns to water vapor and escapes into the atmosphere. Remember the humidity levels inside the leaf tissues are saturated. It’s as humid as it can possibly be in there, and so as soon as those stomates open, boom, all of that humidity zooms out of the plant and into the growing environment, and that’s what we’ve gotta take out of the atmosphere in order to avoid it getting too humid.

When we’re talking about environmental controls, it’s important to remember that humidity is relative to temperature. So as the temperature goes up, the maximum relative humidity also goes up with it. So the warmer it is, the more water vapor the air will hold. This is really important, because people that struggle with high humidity can oftentimes deal with it by reducing their growing temperatures if it’s still within the optimal range for their crops. So it’s one of many variables that kind of interact in this very complicated matrix, and extracting one variable from all of the rest of them can oftentimes be practically impossible. So, what it’s important to do  s understand the effects that temperature, that darkness, that light, that all of these different variables that we’re dealing with in our growing environment, understanding how all of those things effect ultimately humidity.


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