I have 3 king plus 1200 watt led light and 1 mars hydro 600 watt grow light. There in a 10×10 grow tent how many plants can i put in.
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Without doing some individual research on those lights, I’m assuming their around 300 total watts. I try and maintain 35 watts per sqft, this is using quality lighting with efficient diodes. I would factor more needed wattage for the ones you posted 45-50 watts per sqft. With that said I would take a portion of that 10 x 10 and use around a 3 x 3 footprint. 2-3 plants would be my suggestion. A light meter or the phone app PHOTONE would help with light readings and would give you the best idea of how much space those lights would efficiently flower cannabis, then adjust the plant count to this space 
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@OGIncognito so your saying put 2 to 3 plants under each light or under all lights
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3 total plants Growmie. You can veg several more under those 3 but to get a decent harvest I would limit the plant count to 3 max. Can you grow outdoors?
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Here’s some readings in a 2 x 4 at the latter part of flower. I’m running 2) 200 HLG Diablo’s but dialed down to these readings these would be the readings I mentioned above across the grow space
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@OGIncognito ok im about send mines
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@OGIncognito im new to thus dont no how to work this app so do i just hold under lights
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If you’re using an IPhone you’ll need a paper diffuser. I use a copy paper to wrap around the lens. Take several readings under the lights, center, ends and corners. Different plant growth stages require different levels of lighting intensity, I max out around 45-50 DLI in peak flower
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Yes hold it at the height a plant canopy would be, for now take the readings around 12” from the floor
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The 3king is a 225 watt light and the Mars hydro is a 100 watt light if it’s the TS model. These are only enough light for 2 plants at best…sorry but these light sellers on Amazon don’t tell the truth and new growers get stuck with substandard lights like I did years ago. I learned and spent the $1 a watt that a good light costs @BigGrizz
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Could you post a picture of these lights. So we know what to look for because the info I come up with is one king plus 1200 watt led uses 165 actual watts that times 3 is 495 actual watts. The ones I looked at are blurples.
It also depends on what kind of mars hydro you have but lets assume it is 100 actual watts. That is 596 actual watts total.
If this info is corect [which I’m not sure of without more info on the lights] that would mean you could grow 4 plants. I grow 4 under 450 watts in a 2x4.
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You’re correct Brother and I only counted 2 Kings, nice catch @BigGrizz the plant count just went up but check your light numbers for a larger foot print
What’s your budget? HLG is my preference and really tailored to the home grower, you’ll pay more but the proof is the harvest buds
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@OGIncognito ok ok really not trying to go super expensive trying to be energy efficient and i want to fill the tent out
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If you go to HLGs website use the promocode BOXLAPSE. I think i got like 25% off today. I had to order another light because i upped my room to 6 plants. So now ill have a HLG 320XL, HLG600R, and HLG350R in my flower room and its a 8x12x 7
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A a lot of sales out there. I’ve purchased almost all my lights from led grow lights depot dot com.
They’ve got some nice sales going on right now
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@OGIncognito thats who i usually go through, but given to discount i got today, i had to order through HLG direct
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Great deal you scored 
, the depot is great place to purchase and price check
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