Best Carbon Filters & Fans for Cultivation (Sept. 2019)
Those who are new to growing and don’t mind the strong oder might feel that a carbon filter is not necessary in their particular grow set up. Even if you are located in an area where home cultivation is legal, it is still required that you do so discretely. In your buying process, you might think it makes sense not to buy a carbon filter because you only are growing a few plants in a small tent, however even just a few plants in bloom will smell up that entire end of your house as well as leak out doors and windows then wafting around outside. In addition, many do not realize that a carbon filter and fan will not only eliminate smell but also help to keep low temperature and humidity in your tent. Mature cannabis plants are like people when it comes to these conditions. Your plants are going to thrive when you keep your tent around 78 degrees and humidity around no more than 55% (except during early stages of growth.) If you know you live in a climate where humidity and temperature could pose an issue, picking up a carbon filter and fan will greatly improve the growing conditions of your tent.
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One of the most important things to keep in mind when setting up a new grow is how your going to ventilate your space. The reason ventilation is so crucial is because your plants need clean fresh air in order to grow healthy and strong. If you leave your plants in stale air they can start growing spores and unwanted discoloring of your leaves.
The best way to avoid that is to install a good exhaust and intake system into your grow area. When setting up a ventilation system there are a few things you need to plan out first before buying the fans. First you need to calculate the volume of air that is in your grow area. This is easy to calculate, all you need is to measure the length, width, and height of your room. Once you get all your dimensions just multiply all three dimensions to get the total cubic feet of your room. This is important to know because when you shop for fans they use cubic feet per minute (CFM) to classify each fan. You’ll want to be able to exhaust all the air in your grow area every three minutes and replace it with fresh air. So once you know how many cubic feet your grow area is divide that number by 3 and that will tell you how many CFMs you need for your fans. Now we recommend that you use carbon scrubbers on both your exhaust and intake and in that case you should add about 20% to your CFM rating to compensate for the added scrubber.
Now once you figure out which fans you are going to get the next thing to consider is where in the room are you going to mount each fan. For the best air flow and ventilation you should put your exhaust fan on the ceiling or top of the grow tent in one corner and place your intake ducting in the opposite corner on the bottom of your grow area. The reason for this is hot air rises so placing the exhaust fan at the ceiling it will suck out all the stale air first and that way the intake can supply fresh air for the plants on the ground.
Best Budget Option : iPower
iPower is one company that has made home cultivation not only available but also extremely affordable. Known for cheap pricing, the company has helped countless people get started with budget-friendly products.
iPower is also one of the larger manufacturers in China specializing in indoor hydroponics equipment and tools. Thanks to cross-border e-commerce, we are now able to purchase products through B2B marketplaces such as Amazon. iPower was also the first company to make carbon filter and fan combos a readily available package, eliminating the compatibility step that consumers would have to make when buying separately. iPower makes their carbon filters and inline fans sized for 4″,6″, and 8″ ducting. Each fan is given a CMF number which is how much cubic feet the fan moves per minute. When buying a carbon filter and fan you would want to get a fan with a high enough CMF to compensate for the size of your grow space
iPower 4 Inch 190 CFM Duct Inline Fan with 4" Carbon Filter 8 Feet Ducting Combo
iPower 6 Inch 442 CFM Duct Inline Fan with 6" Carbon Filter 16 Feet Ducting Combo
iPower 8 Inch 750 CFM Duct Inline Fan with 8" Carbon Filter 25 Feet Ducting Combo