How Many Autoflowers In A 3×3 Tent- A Complete Guide From Expert

(Last Updated On: August 17, 2021)

How many autoflowers in a 3×3 tent? This question might be halting your indoor planting procedures. Let me help you through this guide.

According to the experts, you can plan up to 6 to 10 plants in a 3×3 tent. However, this number of plants might cause issues while growing. Because the density of plants can consume nutrients value and so the life cycle of plants will be harmful.

So what’s the appropriate number of autoflowers? As a beginner, you should plant 4 to 6 plants in this area. It will keep the environment optimized for plants to flourish and the fruits will be healthy.

How Many Autoflowers In A 3×3 Tent

How Many Autoflowers In A 3x3 Tent

What are autoflowers?

Autoflowers are a special type of cannabis that grows without the influence of photoperiod. They are known as day-neutral cannabis. Also, the autoflowers have a short period of the vegetative stage, they switch to the flowering stage to grow further based on the plant’s age.

Having many plants is bothersome for the growth of plants. If you have space, don’t overfill the space with plants and maintain the ideal number for the grow tent.

In a 3×3 grow tent, you can plant 4 to 6 (maximum) Autoflowers. But don’t plant more than this number as it will harm their growth.

How Much Space is a 3×3 Grow Tent?

Understanding the area of a tent is important as you have to set up lights, nutrients, fans accordingly. So, a 3×3 grow tent means the tent is 3ft long and 3ft wide.

Now, if you multiply the length and width, space or area will be shown. So, the area is (3×3) = 9 square ft; the tent has a 9 sq ft. area to grow plants.

Note: Here is a high quality grow tent available on amazon , Click Here for more details.

What Size LED Light For 3×3 Grow Tent

The size of LED lights for a 3×3 grow tent has to cover both the vegetative and flowering stages. Also, the calculation of LED light size is not tough and follow the processes explained below –

The flowering stage and vegetative stage don’t require the same amount of light exposure. In the flowering stage, the growing area needs at least 50W per sq. ft. Multiplying this number with the area number will help you to get the wattage required for this grow tent.

So, the flowering stage needs (50 x 3 x 3) = 450 Watts. As a whole, you can use 400 watts LED lights for the plants to grow. Coming to the vegetative stage, cut this number in half, that is (450/2) = 225 watts or 200 watts.

Note: Here is a high quality LED Grow Light available on amazon , Click Here for more details.

What Size Fan For 3×3 Grow Tent

To ensure an abundance of airflow, the placement of the fans is needed. Here, the height of the tent is a matter of concern. As you know, the simple method of determining airflow in a grow tent is height x width x length x 1.25.

Let’s say, the tent’s height is 7ft and the grow tent is 9 sq ft. So, the amount of airflow required in this area is 7 x 3 x 3 x 1.25 = 78.5 CFM. If the value of height changes, the CFM will alter accordingly but the calculating method is the same.

Note: Here is a high quality inline fan available on amazon , Click Here for more details.

What Size Carbon For 3×3 Grow Tent

The carbon filter in the tent is to pass away odor and air. If the tent size is 3×3, the 4 inches carbon filter will be enough. Additionally, with the high-pressure lights in the tent, 6 inches carbon filter is a must.

Note: Here is a 4 inch Carbon Filters available on amazon , Click Here for more details.

How Many 3 Gallon Pots In 3×3

Depending on the type of plants, you have to choose the number of pots. If you have all monster plants, the number of pots will vary. For bushes, fewer pots are needed.

To be honest, there is no ideal number for this. Because you might have both bushes and monster plants. Roughly, you can have four to five 3 gallon pots in a 3×3 ft grow tent.

Note: Here are a few 3 gallon pots, Click Here for more details.


In this guide, you will find everything a beginner needs to know about grow tent. To keep the plants healthy and to receive the best yield, you should take care of a number of factors. And you will find the explanation of those factors in our other extensive guides.

Roam around our website, you will lose nothing but gain more ideas about indoor planting. And How many autoflowers in a 3×3 tent is one of them to provide the beginners proper ideas about dos and dons.

If you have further questions, you can ask us in the comment section. Our team will get back to you as soon as possible. Happy indoor gardening!

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