wuts the minimal size

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keith6901

Active Member
hi im pretty new at this im trying to get some descent bud from a 4x4x4 area dont want to go bigger my question is wuts the minimal hps i would be able to use in that area for some decent buds
 
ok i got a 1000 hps and a 250 hps for flowering girls are already vegging under led and florecents find the led are good for vegging only first grow wuz smallbuds wernt dense so i should be ok then with the 1250 watts total
 
keith6901 said:
ok i got a 1000 hps and a 250 hps for flowering girls are already vegging under led and florecents find the led are good for vegging only first grow wuz smallbuds wernt dense so i should be ok then with the 1250 watts total
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sounds good:weed:
 
gotot said:
not quite. it's 1500 lumens per sq foot. cfls dish out less lumens than hps at the same wattage
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I'm just going off what I have researched:

What if you want to determine how much light you need in watts? The general rule of thumb for providing light for an area is a minimum of 30 watts per square foot. 50 watts per square foot is optimal. You can determine the proper lighting for your area by using this formula: 30 watts (or 50) x ?(your) square feet. Example: You have an area of 10 sq. ft. - 30w x 10 s.f. = 300watts/sq.ft minimum or 50 watts x 10 s.f. = 500 watts/sq. ft. (optimal). Also, remember that fluorescent's are weaker and emit less light than an HID. This means you will need 5 times the amount of wattage to equal the output of an HID. So, 30 watts of HID would equal 150 watts of fluorescent's. This is why it is advised to provide a minimum of 30 watts per square foot for HID lights and a minimum of 150 watts per square foot for fluorescent's.
From:http://kingcannabis.com/growingC.html

1500 lumens a square foot for a HPS seems like a small number.
the 600watt HPS light that you suggested for the 4x4 grow.
puts out about 90,000 lumens (Link:http://www.bghydro.com/BGH/itemdesc.asp?ic=HLRBHPS06&eq=&Tp=) divided by 16 square feet = 5625 Lumens per square foot. I've heard of suggested 3000 Lumens per square foot, but when you do the math that becomes all messed up because of the watts there suggesting. like 800 watts is what suggested. Thats like say 100,000 Lumens per square foot. divided by 16 sqaure feet = 6250 Lumens per square foot. Any way 1500 Lumens per square foot x 16 square feet = 24,000 Lumens is like a 250 watt HPS (Link:http://www.bghydro.com/BGH/itemdesc.asp?ic=HLRBHPS025&eq=&Tp=) Thats not that many watts per sqaure foot 250watts divided by 16 square feet = 15.625 watts per sqaure foot.
 
topfuel29 said:
I'm just going off what I have researched:

What if you want to determine how much light you need in watts? The general rule of thumb for providing light for an area is a minimum of 30 watts per square foot. 50 watts per square foot is optimal. You can determine the proper lighting for your area by using this formula: 30 watts (or 50) x ?(your) square feet. Example: You have an area of 10 sq. ft. - 30w x 10 s.f. = 300watts/sq.ft minimum or 50 watts x 10 s.f. = 500 watts/sq. ft. (optimal). Also, remember that fluorescent's are weaker and emit less light than an HID. This means you will need 5 times the amount of wattage to equal the output of an HID. So, 30 watts of HID would equal 150 watts of fluorescent's. This is why it is advised to provide a minimum of 30 watts per square foot for HID lights and a minimum of 150 watts per square foot for fluorescent's.
From:http://kingcannabis.com/growingC.html

1500 lumens a square foot for a HPS seems like a small number.
the 600watt HPS light that you suggested for the 4x4 grow.
puts out about 90,000 lumens (Link:http://www.bghydro.com/BGH/itemdesc.asp?ic=HLRBHPS06&eq=&Tp=) divided by 16 square feet = 5625 Lumens per square foot. I've heard of suggested 3000 Lumens per square foot, but when you do the math that becomes all messed up because of the watts there suggesting. like 800 watts is what suggested. Thats like say 100,000 Lumens per square foot. divided by 16 sqaure feet = 6250 Lumens per square foot. Any way 1500 Lumens per square foot x 16 square feet = 24,000 Lumens is like a 250 watt HPS (Link:http://www.bghydro.com/BGH/itemdesc.asp?ic=HLRBHPS025&eq=&Tp=) Thats not that many watts per sqaure foot 250watts divided by 16 square feet = 15.625 watts per sqaure foot.
Click to expand...
that was a typo, i thought i typed 2500. i didn't do the math when i said a 600w hps i just guestimated. and i did mention he should get a 1000 w. anything over 800 then is good.
 
you could get decent amount/quality from a 400 hps my friend does but i use 600 over a 4x4 and get great results so if u have a 1000 hook it up and grow grow grow your results should be amazing
 
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