300W lazy ass LED grow

HolyGhost23

Well-Known Member
okay so I was moving some crap around my shop for winter a couple weeks back..(its -5c and snowing right now) and I found some seed man blueberry fem seeds that i got as freebies a few years back.. not really thinking of growing anything this winter i had nothing thought out and didn't really have the supplies to be doing anything proper.

I dug around and found my old grow tent and a first gen cxa 3070 set up ive used for several grows before. it pumps out about 20,000Lm using 2 cxas driven at 2.23 amps and 47v . (107W's) ish each chip 3000K.

my tent on the other hand is a 2x4. and I think it needs more light... Id like something 4000-5000K ish and the cheapest thing per lumen i can come up with is are those LED t5 tubes. you can get 24W 3000L tubes for 24 bucks each...

but if anyone has a better way to get 10,000Lm's for around 100 bucks im willing to listen.

the plants are currently in 5gal buckets with promix organic vegetable and herb mix. the fertilizer it has is fairly weak and only fortifies what you add to it.

as for nutes.. im gonna do a highly modified Lucas method. using
gh maxi bloom, GH micro, mycomadness maximum, botanicare pure blend tea, something called Biostrath. also a little epsom salt. and near the last 3 weeks a tiny bit of koolbloom.

ppm's will be adjusted as per what the plant tells me. ph will also be kept between 5.3 and 6.7.

im not expecting much.. but the plants seem to be growing fairly fast and at 2 weeks old they look like others that are at 3 weeks. pretty good for 4 year old seeds.

yeilds.. if i got 4 oz off one plant with just my cxa's then 5 to 6 oz a plant with added light should be a good goal.
its just 2 plants btw.
 

OLD MOTHER SATIVA

Well-Known Member
quote
LED t5 tubes. you can get 24W 3000L tubes for 24 bucks each...

you will have to keep the tubes really close..ilike the led tubes..used very close they may even be good for vertical

used forn cannabis i am interested to see..inbought some but they got borrowed for salad stuff and are working well

cobs seem to work on cannabis..and will out last the tubes..
 

CobKits

Well-Known Member
just as a caveat, what i posted is the quickest/cheapest/dirtiest solution. 130 lm/W may crush fluorescent in efficiency but you can easily spend not much more and get a 160+lm/W cob setup. for example with what i posted. use 2 cobs instead of one. Add another $60 light engine on that same driver and both cobs are at 75W each. You go up 10% in efficiency as well as get better coverage. spend another $10 on a bigger driver (185H-48A) and run those to cobs at 110W each. then add a third later for 3@75W

thats why im a big fan of the 48V "A" model constant voltage drivers with the 50W chips
-near endless flexibility - run 2 cobs at 2100 mA each or 10 cobs at 420 mA each off a 185h-48A if you like
-the 48V driver is a sweet spot and takes those chips north of 2000 mA when its topping out at 53.5V
-the 53.5V top out provides inherent protection to most cobs. smaller cobs like the 1818s are alittle highr voltage and top out at lower currents than say an 1825 which has plenty of room for high current
 

HolyGhost23

Well-Known Member
ohh i plan on adding another light engine later but for now the quick dirty option is the way im going..
 

Gingerbee

Well-Known Member
make sure you ship with usps to keep customs fees down.
Fedex with tell ya your good then a month later get a bill in the mail for taxes of 5$ and there service charge of 35 total bs
p.s great way to spend 10$
 
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