Light number and light power due to the space amount


I have a important question and would be grateful if you could guide me.

Is it better that I divide the my room to large number of small sections , for example 2x2 or 2x3 foot and install a less power LED for each section, in total a lot of less power LEDs with little distance of each other or do i divide to a few large sections for example 3x4 or 4x4 or even 5x5 foot and install a powerful LED for each section, in total a few of powerful LEDs?

Best regards


totally depends on how you plan to use your grow area.


Just for growing and flowering stages


It depends on your lights. HID with reflectors cover a much wider area than LEDs. Most of the LEDs seem to cover around 2.5x2.5 areas. There are real good ones that do better if you have the money. I personally would use 4 Mars 300s to cover 4x4.


Thank you.

Is the Mars 300s covers really good the 4’*4’ Namely if i divide my room to 9 section 4’*4’. Are 36 units of Mars 300s enough for all room space?


I think we need to look at this differently. Exactly how much space do you have? If you have the money for 36 $80 lights you might do better with high end larger LEDs or an HID set up.

So: what is the length and width. Where is it located (cool basement, hot attic, warehouse, etc.)

Is there ventilation?

This sounds like a 12x12 area, correct? You would want to make it into two areas for vegging and flowering.

What’s your budget?


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How do you like Mars?


I haven’t used the Mars personally, I got burned by the Chinese knockoffs. We had a real good discussion going in my last grow log and it included an in depth video review of LEDs by Mars in which they actually used the lights I bought and showed how bad they misrepresented the lights I had. Out of that we have had a ton of folks review their Mars lights glowingly. What was shown was a Mars300 puts out more Pars, represents their wattage correctly, and has a bigger footprint than 800watt Chinese knockoffs that cost twice as much.

That is why I would recommend the Mars for home growers on a budget.


and a review of some of the scrog threads on here will show first hand exactly what a mars hydro setup can do for you. I was impressed and the price is fantastic


@Mazoo ,

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I want to use all my space( typical room at my home, 3*4M) in the first to
grow and continue to flowering. In addition I want to buy a carbon filter
and exhaust and inline fan and a GSE or Smscom controller for ventilation.

The reason why I’m not using HID lamps is high electric bill and i am
afraid that they suspect to my high power consumption. Of course, many
people are saying LED lights are better than hid lamps for plant growth.

Meanwhile, my budget is between 6 and 8 thousand dollars.

Thanks @garrigan62 this was getting over my head.

Thank Mr. Stomper
I want to use all my space( typical room at my home, 3*4M) in the first togrow and continue to flowering. In addition I want to buy a carbon filterand exhaust and inline fan and a GSE or Smscom controller for ventilation.

The reason why I’m not using HID lamps is high electric bill and i amafraid that they suspect to my high power consumption. Of course, manypeople are saying LED lights are better than hid lamps for plant growth.

Meanwhile, my budget is between 6 to 8 thousand dollars.

This is a big enough area (9’9"x13’) to grow about a dozen 5 gal plants I think. You should look over Garrigans post for choice of lights. If you want to get walked thru exactly what you need and how to build it you should join Bergman’s Lab.

You have the budget for a couple of Kind LEDs or Black Dogs and with those you may be able to cover that area with one or two lights.

Thanks again,

Please guide me about this case. Which one is better? Using lots of low power lights or using a few high-power lights.

Dear garrigan thank you so much for your guidance.

It really depends on the quality of the light. The top of the line lights are bigger and wider so right off the bat they cover more area. Then you add in their quality of build etc and it’s hard not to recommend the real nice tried and true ones like Kind. I can give you my personal “what would get if I had 8 grand” version and others can give you better ones.

First, for this kind of investment I would immediately join Bergman’s Lab - it’s like insuring it.

My dream light would be the KIND models. They have one that covers 4’x4’. So two of those - around $1600.00 ea.

You center those and compliment the edges with T5 fluorescents.

Get the carbon filter, duct work, etc.

Decide on soil or soilless grow.

Ok, thank you so much dear Mr Stomper.


You are very welcome if I can help you in anyway you just ask my friend.