How big can i go?

reza92

reza92

Well-Known Member
ok guys I have recently put together my first led flower light (currently using a 400w hps which is a killer in summer with 40+ degree c days)

my rig consists of 9 x 1ft bridgelux gen 2 eb strips (3500k and 4000k mix i think) wired in series being driven by a meanwell hlg-120h-c700b. i plan to drive it between 500-700ma.

how much space can i expect this to flower with this setup?
is it capable of replacing my little hps?


my current grow space is about 5-6 sq ft and ive been quite happy over winter with my hps in this space.

thanks for any advice :bigjoint:
 
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N

Nutria

Well-Known Member
reza92 said:
ok guys I have recently put together my first led flower light (currently using a 400w hps which is a killer in summer with 40+ degree c days)

my rig consists of 9 x 1ft bridgelux gen 2 eb strips (3500k and 4000k mix i think) wired in series being driven by a meanwell hlg-120h-c700b. i plan to drive it between 500-700ma.

how much space can i expect this to flower with this setup?
is it capable of replacing my little hps?


my current grow space is about 5-6 sq ft and ive been quite happy over winter with my hps in this space.

thanks for any advice :bigjoint:
Click to expand...
Take your total wattage and divide by the suggested 30w/sqft and you will find how big your grow space could be

1ft eb2s have a max current of 700mA, right? Btw they shouldn't have any problem since bridgelux usually downsize their max
 
Profound Bastard

Profound Bastard

Active Member
150W won't replace 400W of hps, but is a more appropriate size for 5-6 sq ft.

If you are seriously concerned about summer heat, you could try running autoflowers during summer. You'd only need 75-100W for that space.
 
littlejacob

littlejacob

Well-Known Member
Hi! 400w HPS over 6ft2 is a bit too much...how many grams did you get on average with HPS???(dry weight) With a more efficient light like COB or qb or strips at low current you should be able to get over 1gpw so 6ft2 x 30w = 180w so you will be able to harvest depend on your skills between 180 and 270 grams and over...
Have a lifted one and lots of good vibes from France
 
mastrmasn

mastrmasn

Well-Known Member
Profound Bastard said:
150W won't replace 400W of hps, but is a more appropriate size for 5-6 sq ft.

If you are seriously concerned about summer heat, you could try running autoflowers during summer. You'd only need 75-100W for that space.
Click to expand...
Super new to the auto flower plants.
Do they require less W then photo plants?
 
reza92

reza92

Well-Known Member
littlejacob said:
Hi! 400w HPS over 6ft2 is a bit too much...how many grams did you get on average with HPS???(dry weight) With a more efficient light like COB or qb or strips at low current you should be able to get over 1gpw so 6ft2 x 30w = 180w so you will be able to harvest depend on your skills between 180 and 270 grams and over...
Have a lifted one and lots of good vibes from France
Click to expand...
ive been averging 0.5+ grams per watt ish with the hps (it was what i had sitting at the time) and planned on building 2 of these to replace it anyway (plus give me a little room to grow in the future).

projectinfo said:
http://ledgardener.com/diy-led-strip-build-designs-samsung-bridgelux/

Take a look at these instructions Befor you buy the gear.

View attachment 4179899
Click to expand...
actull based what i made of his tutorial, i just had a cc driver so used series wiring instead of parrallel. if i build another any advantage of swtching?

Profound Bastard said:
150W won't replace 400W of hps, but is a more appropriate size for 5-6 sq ft.

If you are seriously concerned about summer heat, you could try running autoflowers during summer. You'd only need 75-100W for that space.
Click to expand...
im well aware and just built the first as a test bed (still cold enough here i need the hps). i plan on makeig 2 so 300w of strips.

nfhiggs said:
About 4 square ft.


6 square feet will need about 200 watts, using the B-lux Gen 2 strips.
Click to expand...
this has been hella helpful and pretty much confirmed what i was thinking. was thinking 2 of these total for my space and running them at 500ma.

how close will 2 at 100% be to replacing the hps?
 
Profound Bastard

Profound Bastard

Active Member
mastrmasn said:
Super new to the auto flower plants.
Do they require less W then photo plants?
Click to expand...
They can use lower wattage because you leave the lights on for 20-24 hours, so the amount of photons striking the canopy on a given day ends up being the same, just spread out over a longer period of time, if that makes sense. It's called the DLI or Daily Light Integral, and what the plant really cares about. We are just stuck with 12/12 during flower on photoperiod plants.
 
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