To determine the extractor fan size of your grow room or tent, the formula is to multiply grow room volume(cubic feet), carbon filter factor(+25%), insulation factor(±20%), ducting(+10% for 10 feet) and the light factor(+10% for 1000W). You’ll get the fan size in CFM.
How big of a fan do I need for my grow room?
To calculate multiply length x width x height of growing area e.g. A room that is 8′ x 8′ x 8′ will have a volume of 512 cubic feet. Your extraction fan should be able to adequately exchange the air in an indoor garden once every three minutes. Therefore, 512 cubic feet / 3 minutes = 171 CFM.
Should I run my fan 24/7 In my grow tent?
Flowering is the most important part of the whole growing process, specially for cannabis growers. As always, both exhaust and oscillating fans should be running during the light hours. So, the best policy is to run scrubber fans 24/7 at late flowering stage.
What fans do I need for my grow tent?
Setting up oscillating fans will help moderate the temperature and humidity in your grow room, but fans alone are not enough. You need an air extractor fan system to keep the air in your grow room or grow tent fresh.
What size fan for 2×4 grow tent?
For anything under 205 cfm, we recommend the 4 inch fan from AC Infinity. For everything under 402 cfm, we recommend their 6 inch fan. For everything under 807 cfm, we recommend their 8 inch fan. For requirements above 807 cfm, you’ll need to put several fans in your tent.
How many fans 5×5 grow tent?
A 5×5 grow tent can only allow you to get one or two fans, so make sure that you have them strategically placed. Personally, I’d get a stand fan to make sure that all my plants can get cool air. An inline fan is connected to the ducting of your grow tent.
What size exhaust fan for 10×10 grow room?
For a 10′ x 10′ space, assuming you have 8 foot ceilings, you’re cubic footage adds up to 800 cf. This means you’ll need an exhaust fan with a cfm rating of around 160 in order to remove the air every 5 minutes.
Should you leave fan on all the time grow tent?
You need to keep the fans running during the light hours. This will help prevent humidity and heat affect your yield. During the dark hours, keep the fan off after 1 hour. Let the plant flower without any disturbance.
Can you have too much airflow in grow tent?
Well, when the rate of air leaving the grow tent(through exhaust fans) is more than the rate at which air enters(through intake fans) is higher, then you can say a negative pressure taking place in the grow tent. When the outtake fan is too much efficient than your intake fans.
How often should I exchange the air in my Grow Tent?
Air in your grow area should be exchanged at least every 5 minutes. If you are using a grow tent that is 5′ x 5′ x 6′ this is 150 sq/ft of air. For optimal airflow, you need a filter and fan that can move between 30 and 60 cubic feet per minute (CFM).
Do you need air intake in grow tent?
Larger grow tents can benefit from using passive air intake as well but will require higher CFM exhaust fans. Air intake is only a part of the indoor growing equation. Many factors like grow tent size, grow lights, and inline fans contribute to creating the optimal growing environment.
Does a grow tent need to be vented outside?
Having ventilation for your grow tent is critical. Without fresh air coming in and stale air going out, plants can become anemic and probably wither and die. We all need fresh air and a sealed environment like a grow tent does not have any ventilation by design.
When should I run my carbon filter?
In a broad sense, carbon filters are needed to be changed after 18-24 months of regular(24/7) use. In less demanding situations, they can last up to 4 years. However, this lifetime depends on the carbon quality, usage, humidity, plant types etc.
Do grow tent fans need to oscillate?
If you are growing weed in a grow tent, you will need an oscillating fan at the least. Most likely, you will also need an inline fan to vent air out of the tent. In larger tents, you’ll want a second inline fan to suck fresh air inside.
How do I know what size extractor fan I need?
The rule of thumb is that you need at least 1 CFM per square foot of room area. To determine the square footage of your bathroom, multiply the length times the width. For example, if your bathroom is 6 feet wide and 9 feet long, its square footage is 54. Therefore, it should have a fan rated for at least 54 CFM.
What size carbon filter for 4×4 grow tent?
What size carbon filter for a 4×4 tent? In most cases, a 4-inch carbon filter will be more than enough for a 4×4 tent. Since a 4×4 tent has a relatively small internal volume a 4-inch carbon filter should easily remove all the odors from the air before they are exhausted from the tent.
What size light for 5×5 grow tent?
So, if your 5′ x 5′ growing space requires 320-480 watts of grow lighting, and you choose the LED route, make sure your LED light features an actual wattage of between 320-480.
How many plants can you grow in a 4×4 tent?
Answer: Putting 6 plants in a 4×4 grow tent leads us to a plant density of 1 plant in each meter square area. That’s a pruning style growing, from where you can expect about . 25 lbs of harvest from each plant.
How big is a 5×5 grow tent?
Gorilla Grow Tent 5’x5′ Specifications Dimensions 5’x5’x6’11” Weight 88 lbs. Canvas Density 1680D Pole Diameter 22mm Door Quantity 2.
How do I calculate CFM for grow room?
To determine what your CFM requirements are, simply divide the volume of your room by 3 minutes. Sticking with our example of a 350 cubic foot grow area, we would divide 350 Cubic Feet / 3 minutes to come up with a number of roughly 166.67 CFM.