IYO: What's the optimum amount of wattages to have in a 48"x48"x80" mylar grow tent using LED lights?

Thanks for all the helpful advice and fun reading

HydroKid239 said:

650-750W

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This man is on point everyone saying 30wpsqf is off get me a led grow light that uses like 480watts(30wpsqf) that properly lights up a entyre 4x4 flowering footprint and I call bulls#!t and if you can I bet they lined the entire floor with mylar too trick the par meters! Cuz a plant canopy ain't 90% reflective!
Here is the par map for a 4 x 4 flowering footprint using 600watts of led lighting(37/38wpsqf)

In my opinion too properly light up a 4 x 4 flowering footprint you need atleast 600watts of led.

I see everyone is still replying in "watts", but fail to understand that even LEDs are all different in effiency. You can have a 600 watt led but if it's in efficient, a 400 watt led may have better results. Can we at least state what minimin micromoles per watt we are referring too. Like something at least at say, 1.75?

ComfortCreator said:

I would want 1500umols available.
If you get efficient LED lighting (2+, preferably 2.5 or more) that means 750 watts at most.

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^here. Covers the 4x4

the ability to get a even 1200+umol canopy is the goal I think. You are going to have strains that will take to full amount. I’m finding my plants are liking the 800-1000umol range.

Lots of light companies are going to tell you a light will cover 4x4. But probably only average 500-600 umols. Then they will tell you it can veg a 6x6 at 300umols.

but that’s like drag racing a Prius in the 1/4mile.
only thing you are gonna win is the least amount of fuel used category.

Bookush34 said:

the ability to get a even 1200+umol canopy is the goal I think. You are going to have strains that will take to full amount. I’m finding my plants are liking the 800-1000umol range.

Lots of light companies are going to tell you a light will cover 4x4. But probably only average 500-600 umols. Then they will tell you it can veg a 6x6 at 300umols.

but that’s like drag racing a Prius in the 1/4mile.
only thing you are gonna win is the least amount of fuel used category.

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I used 1000umols per sq meter as in many studies it can be shown that above 800umols, without CO2 there is a diminshing return.

With 1000umols, that would allow for dimming as needed, or being able to run the boards at a greater distance for more uniform coverage.

A 4x4 is 16sq feet, a sq meter is 10.76 feet, so a 4x4 is almost exactly 1.5 sq meters.

1000 × 1.5 = 1500umols
800 x 1.5 = 1200 needed
Leaves a nice 20% tolerance for how they are used.