DiY LED - Cree CXA3070

Voidling

Voidling

Well-Known Member
One of my led has never left it's package. The other wasn't ran long before the driver burnt out and I shut down my grow.

Not too friendly nagging me to give them to him for free either. I told him about $80 a square foot. $35+ cxa3070 $15 driver $20 heat sink plus shipping
 
Growmau5

Growmau5

Well-Known Member
Voidling makes a good point, in extremely poor tap water areas such as yours buying water from a machine or grocery store is a good option for small gardens. Also, the aquarium shop near my house sells RO water for 25cents a gallon. BYO container.
 
littlejacob

littlejacob

Well-Known Member
Ok thanks
What's high ppm level? When it is become a problem?
I just bought an EC reader...I want to try hydro...but on one or two plants to start! I am not sure what kind of system I want to use...but definitely diy for a first experience. Any advice?
Have a great day ★
 
Abiqua

Abiqua

Well-Known Member
Sand filters can replace RO filters...not for every situation but they are a cheap as dirt option, literally, for filtering high ppm water, just gotta know or study up on some geology/chemistry

RO is nice, a close family member of mine works on a multi million dollar RO factory for a FabTech plant....
 
salmonetin

salmonetin

Well-Known Member
...i noticed that RO systems reject some water... "wasted" some water... ....for my pov we can reuse this water on wc tank...
...but i look an ultrafiltration system with membrane without reject water... the Storm K-01...

http://www.leroymerlin.es/fp/14753564/equipo-de-ultrafiltracion-4-etapas-storm-k-01?idCatPadre=111471&pathFamilaFicha=5001

...are they ok?... or i must go on one RO system?...

...any recomendation for a good and economic ph or ec meter or reader??...

...thanks in advance...

...upss and sorry Supra for my offtopic post...

pd... for my bros... i found other curious method with thermocouples and cobs...;)

http://unvlt.com/pdf/application-notes/led-modules/EVM03-Round-LED-Module-Thermocouple-Instrumentation.pdf

...and one inspirative heatsink...for my pov...;)

http://unvlt.com/pdf/application-notes/led-modules/LUGA-HEATSINKS-5K-10K-lm-Modules.pdf

pd1....thanks V... reuse the "wasted" (impurity) water with a destilation solar system... mmm ...like the idea for a DIY... ;)

:peace:

Saludos
 
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Voidling

Voidling

Well-Known Member
The wasted water with have all the additional impurities that are taken out of the purified water.

You could look into steam distillation if you want to minimize waste water. Can be hated by electricity, natural gas, propane, biomass, or even solar if you have enough sun collection and focus

Can be bought or made if your quite handy. I really like steam distillation setups
 
S

sethimus

Well-Known Member
littlejacob said:
Bonjour
This is very interesting regarding to the price!
Is it easy to install?
I am close from Germany.
Is it something useful in soil?
Have a great day ★
Click to expand...
you just unscrew the little sieve on your faucet and screw on the ro filter instead, then you have a little switch that either allows you to get normal water or it redirects the water through the ro filter.
 
B

benbud89

Well-Known Member
hehehemann said:
Great thread, its inspired me to do my own build so I went ahead and ordered:

3 x HLG-185-C1400B
12 x CXB3070
12 x Arctic Alpine 11 Plus Heat sinks
12 x Ideal Holders 50-2234C
Kapton Tape with Artic Silver 5 Thermal Paste

Will acquire the wires from local hardware shop with some kind of hanging gear like others have done.

I'm thinking of 3 separate light bars with 4 cobs on each. What could I use to power the 4 fans on each bar?
What else will I need to purchase? Any help is greatly appreciated as I start this project.

Thanks.
Click to expand...
how much did that add up to?
 
Voidling

Voidling

Well-Known Member
Tim Fox said:
Earning something for your labor is OK, I am flowering two pplants under two cxa3070, it will work but it is a small grow
Click to expand...
How small? I measured my personal space and it's only 2' tall, 4' wide and as deep as I want it.

Or I can remove the floor and be 33" tall but only two foot wide.

I'm wanting to seed out a number of plants for pheno hunting, sexing and seed making. So I'm thinking floor space is more important than height anyway but not sure I can keep them short enough even flipping immediately after rooting.

Anyway. I'm trying to find a coverage number at such height. I have the two cxa3070 at 50w and cab use maybe 3 or 4 of my vero 10 maybe if need be. Have to save some for mothers and cloning.

Looks like 2sq feet maybe touch more if I add the vero
 
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Castaman

Castaman

Well-Known Member
Hello all! Today one of my cxa 3070 start to blink, worked perfect more than a year.
What could it be? Fixed on CPU cooler by kapton tape, with fan attached, powered by chinese driver 50w, 1500mA.
 
Tim Fox

Tim Fox

Well-Known Member
Voidling said:
How small? I measured my personal space and it's only 2' tall, 4' wide and as deep as I want it.

Or I can remove the floor and be 33" tall but only two foot wide.

I'm wanting to seed out a number of plants for pheno hunting, sexing and seed making. So I'm thinking floor space is more important than height anyway but not sure I can keep them short enough even flipping immediately after rooting.

Anyway. I'm trying to find a coverage number at such height. I have the two cxa3070 at 50w and cab use maybe 3 or 4 of my vero 10 maybe if need be. Have to save some for mothers and cloning.

Looks like 2sq feet maybe touch more if I add the vero
Click to expand...
Two feet tall is to short for cxa3070, my grow is small in terms of yeild not size of grow room, I have space for six or more cxa3070,
 
Voidling

Voidling

Well-Known Member
I was afraid of that. I think 8 vero 10 wouldn't be enough for much of a footprint.

I'm at the point I need to grow a little to finance getting the pieces I need but can't because I don't have the pieces I need
 
Castaman

Castaman

Well-Known Member
I can't explain this..two cobs, same environment, working fans...no lens.
One is damaged, i think it's temperature...
IMG_20150924_224331.jpg
When i dissasembled it i saw my thermal interface dry, so it's 101% overheating.
No one knows, how much degraded second cob but it doesn't look damaged and works well.
 
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