picking LED grow light

K

kidneybean

Member
im so stuck in what LED light to choose an im looking for the cheapest way to afford them for a 1.2m x 1.2m tent with 4 plants... looking for around 650w - 820w all in all so would it be better to have 2 350-400w lights or just 1 700-820w light? could have also what should i look for when buying? im stuck between a few brands if you could check them out... also want them for best yields an yes ino hps lights will give better yields but i dont want to use up that much electricity so here goes
photon pro http://www.growlightuk.com/GrowStore/PhotonPro.aspx
helios pro http://www.growlightuk.com/GrowStore/Helios.aspx
evader http://www.growlightuk.com/GrowStore/Helios.aspx
lighthouse hydro chrome http://www.ebay.co.uk/itm/135W-UV-Lighthouse-Hydro-BlackStar-LED-Grow-light-3-Watt-3W-Flowering-LEDs-L007-/290950874327?pt=US_Hydroponics&hash=item43be0604d7
any ideas on how much lights enough for maximum yield? an someone give me an answer on which i should buy? any experiences thanks people
 
tags420

tags420

Well-Known Member
They all come form the same factory in china and sold under many different names all over the world. The wattage stated(3wx336=1008w) is not the real wattage they pull, it's more like 400w of actual power. At the absolute best you could pull is 1.5g/w with the best led's in the business, and that is a dream that no one has pulled yet. If you are using lower quality like the lights you are looking at, you will be lucky to get 1g/w(crazy lucky). LED's can save power and perform great, but to live up to their hps counterparts, it will take ~65% of the wattage...and once again that is if using the best performing possible. Then there is they other draw back, to use the best it cost a pretty penny.

What are your yield expectation out of your 4x4??


Edit:
Not every cree is the golden ticket, so what model cree is very important. Companies that use one low performing cree in a array with 200 even lower performing diodes is just another marketing play.
 
tags420

tags420

Well-Known Member
You expectations are realistic...wish more were like you.

Check into Vipar led...they are a european company(I am guessing you're in EU?) that has a good reputation for what they are(really similar to the photon pros you linked).
I would get the biggest light you are comfortable getting and running. There isn't an led out that is too big/powerful for a 4x4. Amount of light has the greatest correlation with yield of anything you can give a plant. More light=more yield. Things like adding nutes won't do anything if there is no light to drive photosynthesis to use them.
 
K

kidneybean

Member
ive looked at them previous but the highest one is 400w so would 2 of them be enough? im just wonderig how much wattage would be optimal for each plant eg 200w each? i understand that light is a very important factor just would like to know which would be best suited for 4 plants in that size tent thanks man
 
tags420

tags420

Well-Known Member
200w per plant of real wattage draw is great. 2 lights would cover the area way better than one.
 
Green Thumb MN

Green Thumb MN

Active Member
I would look at 4 smaller lights.

Easier to get even coverage, adjust height above each plant.

I have 2 lights rated at 240watts.
They actually use 150-185 watts each.
Cost was $200 usd each.

Good luck with your grow!
 
K

kidneybean

Member
which one is the best led grow light is it lighthouse hydro blackstar or photon pro or evader or helio? which one is gunna give me best yield?...
 
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