Best Setup for Your Indoor Grow Room


Best Setup for Your Indoor Grow Room

Do you struggle to find what size light goes with what size tent? Is my light too strong? Is it too weak? Sure, these are a few problems growers face. Is there any guide that can teach me the easiest way to make sure I have the proper light for the size of tent I want? Which is the best setup for an indoor grow room? Thankfully yes there is!

In this article, we put all that information in one place to make it as easy as possible for you to find the exact information you need. This way you can get to growing faster and begin to #LoveWhatYouGrow.

Before we look at the chart, there is a simple equation that will show us the proper grow light strength required for a given tent. We can break them down into categories:

  • Low efficacy, generic budget lights: 50-60w/sq ft
  • Medium efficacy, “housing”-type lights: 30-40w/sq ft
  • High efficacy, panel with quality diodes (eg. Samsung): 25-30w/sq ft

Since VIVOSUN lights use Samsung diodes we will focus on that scale for this article. This formula will work with any brand of light but we will use our lights for quick reference. Let’s start with this as an example:

Let’s take a 2ft x 2ft tent. You would find the square foot by multiplying the length and width: 2 x 2 = 4 sqft.

Then we do 4 x 50 =200w for low efficacy, 4×30= 120w for medium efficacy, and 4×25= 100w for high efficacy.

This is the actual wattage from your outlet, so for a 2×2 tent then a VS1000 would do great.

Best Setup for Your Indoor Grow Room

With this simple formula, it’s easy to make sure you have the perfect best setup. Let’s take a look at pairing lights and tents:

Tent size SQ FT Wattage Recommended light CU. FT CFM Recommended exhaust
VIVOSUN 30″ x 18″ x 36″ Grow Tent = 3.75 sq ft 3.75*25= 93.75w VS1000x1
11.25 ft³ 18 VIVOSUN 4 inch exhaust
VIVOSUN 24″x24″x36″ Grow Tent = 4.0 sq ft 4.0*25= 100w VS1000x1
12³ 19 VIVOSUN 4 inch exhaust
VIVOSUN 2×2 Grow Tent 24″x24″x48″ = 4.0 sq ft 4.0*25= 100w VS1000x1
16 ft³ 25 VIVOSUN 4 inch exhaust
VIVOSUN 32″ x 32″ x 63″ Grow Tent = 7.1 sq ft 7.1*25=177.5w VS1500x1 37.33 ft³ 60 VIVOSUN 4 inch exhaust
VIVOSUN 36″x20″x63″ Grow Tent = 4.8 sq ft 4.8*25=120w VS1000x2
26.25 ft³ 45 VIVOSUN 4 inch exhaust
VIVOSUN 3×3 Grow Tent 36″x36″x72″ = 9.0 sq ft 9*25= 225w VS2000x1
54 ft³ 84 VIVOSUN 4 inch exhaust & VIVOSUN 6 inch exhaust
VIVOSUN 4×2 Grow Tent 48″x24″x60″ = 8.0 sq ft 8*25=  200w VS1000x2
40 ft³ 63 VIVOSUN 4 inch exhaust & VIVOSUN 6 inch exhaust
VIVOSUN 4×4 Grow Tent 48″x48″x80″ = 16 sq ft 16*25= 400w VS4000x1
106.67 ft³ 179 VIVOSUN 6 inch exhaust
VIVOSUN 5×2.7ft 60”x32”x80” Grow Tent = 13 sq ft 13*25=  325w VSF4300x1
86.11 ft³ 141 VIVOSUN 6 inch exhaust
VIVOSUN 5×5 60″x60″x80″ Grow Tent = 25 sq ft 25*25= 625w VSF6450x1
166.67 ft³ 273 VIVOSUN 6 inch exhaust & VIVOSUN 8 inch exhaust
VIVOSUN 8×4 96″ x 48″ x 80″ Grow Tent = 32 sq ft 32*25= 800w VSF4300x2
213.33 ft³ 350 VIVOSUN 8 inch exhaust
VIVOSUN 8×8 96″x96″x80″ Grow Tent = 64 sq ft 64*25= 1600w VSF4300x4
426.67 ft³ 716 VIVOSUN 8 inch exhaust
VIVOSUN 10×5 120″x60″x80″ Grow Tent = 50 sq ft 50*25=1250w VSF6450x2 333.33 ft³ 560 VIVOSUN 8 inch exhaust
VIVOSUN 10×10 120″x120″x80″ Grow Tent = 100 sq ft 100*25=2500w VSF6450x4 666.67 ft³ 1119 VIVOSUN 8 inch exhaust

This is just a basic guide. You can add more light or use a dimmer switch to get the right wattage or to have higher wattage for better canopy penetration.

Finding the right size exhaust fan can be a little more tricky. But we will break down the numbers so you can use it as a basic guide to save you the trouble.

For this example, we will say that we want to scrub the air every minute in the tent. (Best setup for your indoor grow room)

First, we must find the Cubic Foot of the grow room. To do this we multiply Length x Width x Height. So on a 2x2x4 tent we would do

Fan CFM =  2x2x4 =16 ft³

Next, we must factor in the equipment, ( carbon filter, ducting, lights)

For carbon filters, the rule of thumb is that it reduces the efficiency of the extractor fan by 25%

Fan CFM = (16 CFM + (16×25%))= 20 CFM

For ducting the rule of thumb is to factor 1% reduction for every foot of duct. And for every bend, we factor 20% reduction. So a 5-foot duct with 1 bend would be a 25% reduction in efficiency

Fan CFM = (20 CFM + (20×25%))= 25 CFM

For HID lights we add a 10% reduction for 1000w since they tend to run hotter.  For LED since they run cooler we only have to add a 7% reduction per 1000w.

Fan CFM =(25 CFM + (25×10%)) = 27.5 CFM

Ideally, you would want a fan slightly higher than the final CFM this way if you choose to add equipment like a silencer or more ducting you can do so easily without having to replace the current exhaust fan.

I know this is a lot of technical information, but in all honesty, it’s not very difficult once you learn how to do it. This should allow you to pick your tent size and see the lights and exhaust for that particular tent. Hopefully, this will keep you from having to spend hours searching for the right information before you make the purchase.

The information above uses just our LED as an example but there is still the option of using HPS, CMH, or Fluorescent in your space. The wattage is still the same so you can still use this guide to help determine the right setup.

If you have any questions, please don’t hesitate to reach out to us!

And be sure to check out our other blog posts for useful tips on becoming a great grower!

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