% You know that smell you get when your grow room gets wet? Here's how to prevent it.
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How to Keep Your Hydroponic Grow Room From Smelling

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Let’s be honest—grow rooms can smell. And not everyone is a fan of that particular scent. If you’re looking for ways to keep the odor to a minimum, you’ve come to the right place. This blog post will share some tips and tricks for keeping your hydroponic grow room from smelling.

What Are Some Common Causes of a Smelly Grow Room?

  1. Some common causes of a smelly grow room are overwatering, poor ventilation, and using dirty grow pots or trays.
  2. Another common cause of a smelly grow room is nutrient burn. If your plants are too close to the light or you’re using too much fertilizer, they may start to produce an unpleasant odor.
  3. Finally, if your grow room isn’t properly ventilated. This can cause the smell.

How to Prevent Hydroponic Grow Room From Smelling

1. Keep your grow room clean.

This practice might seem obvious, but it bears repeating: a clean grow room is a non-smelly grow room. Be sure to sweep up any fallen leaves or debris, and if you’re growing in soil, make sure to fluff it up now and then to prevent any stagnant smells. If you are growing in hydroponics, clean and change your reservoir weekly.

2. Install an exhaust fan.

An exhaust fan is essential for any grow room, as it helps remove the hot air and smells from the space. Install one that is powerful enough to keep up with your grow light.

3. Ventilation is vital.

Another obvious one, but still worth mentioning. Good ventilation will help to circulate the air in your grow room and prevent any stale smells from building up. Open up a window or door for some fresh air every day. Proper ventilation helps keep your grow room clean and prevents mold and other pests from taking over. You can improve ventilation by installing fans or using an air purifier.

Related: 11 Steps to Choosing the Right Fan for your Hydroponic Grow Rooms

4. Try an air purifier.

An air purifier is a great piece of equipment to improve the quality of air in your grow room, and it is especially useful if you live in a city with high pollution levels. Air purifiers work similarly to carbon filters—they trap odor molecules in their filters and prevent them from circulating in the air. However, they also have the added benefit of cleansing the air of other impurities like dust and pollen. Air purifiers come in many shapes and sizes. So you can select one that fits your needs (and budget). Also, look for an air purifier with a high CADR (Clean Air Delivery Rate) so that you know it’s up to purifying your grow room air.

5. Use carbon filters

Another way to keep your grow room from smelling is to use carbon filters. Carbon filters are designed to remove odors from the air and can be very effective at keeping your grow room smelling fresh. You can find carbon filters online or at your local hydroponic store. Make sure to change your carbon filter regularly so that it continues to work effectively.

6. Keep your plants healthy

Another way to reduce the smell of your grow room is to keep your plants healthy. Healthy plants produce fewer compounds that cause smells, so if you can prevent problems like pests or diseases, you’ll also be able to reduce the odor in your grow room.

7. Use organic nutrients

Consider using organic nutrients for your plants. Synthetic nutrients can sometimes cause smells, so switching to an organic fertilizer may help to reduce the odor in your growing room. You can find organic nutrients online or at your local hydroponic store.

If you are looking to apply one of the above technique you may need relevant equipment. Click the below listed links to select the best one suited for your need.

  1. Exhaust fan.
  2. Inline fans
  3. Oscillating fan
  4. Air purifier.
  5. Carbon filters
  6. Timers for hydroponics
  7. Organic nutrients for hydroponics

Related: 6 Inline Fans That Will Keep Your Indoor Grow Room Cool and Ventilated


No one likes a smelly grow room, not even your plants! Following these simple tips, you can keep the smell to a minimum and enjoy all the benefits of hydroponic gardening without any stink.

Thank you for reading!

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