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Thats the most interesting part of this bubbleponic setup, I think whole time is not nessery at all, but have no experience yet...

dont have pics on me, but i used exactly this build - http://www.growweedeasy.com/high-yield-bubbleponics-technique

I see, but i have 2 pumps running in each pot... The water pump is pumping 600L/H, I think it is too much to run it 24/7 =)

You water pump is connected to a timer, right? How many times it goes on during a day and for how long?

I have read that the water pump should be switched off when the roots grow enouth to touch the water.

I have always been using soil to grow, new to hydroponics... So trying to figure out how many times do the water pump gets "on" in a day and for how long? I know that depends on the growing medium. I am thinking about using coco, is it a good idea? Or maybe clay is better for bubbleponics? What...

If i order 1216 to replace old chips in this chin lamp do i need to buy heatsinks also or do 2 fans do their job to cool 4 of them? And what is external 100kohm potentiometer for dimming?

Thanks guys for answering, Does couple cm differece be a serious problem? Thats a good idea but i already have two :( But does 700 cfm fan would be enouth for 4 HPS 400W

So i have 2 tents and 2 HPS 400W each so it is 1600W in total. Both tents have 2 Sputnik reflectors with cool tubes conected in line. Would the temp be good if i put on the both ends carbon filters 350 cfm each and 1 fan outside of the tents 700 connected to both pipes? And can somebody suggest...

how long does the shipping to Finland take? =)

Is somebody selling them in europe?

about 60... what do you mean not efficient? i am compleate 0 in physics as you can see =)

me either, but thanks a lot dude!!! I didn't know what to do with them, i ordered 6 lamps from china without reading any info...

So i can use any cob that is nominal up to 36V? Citizen CLU048-1212? The Citizen CLU048-1212 would not run at all powered by 1 driver?

What kind of cobs i should order for this type of driver?

Here is pics of what this 1200W piece has inside... What types of cobs i should choose?

Thank you guys for great answers! I will be opening them as soon as i find a screw-driver =D

Could somebody advise can i change the purple cobs to something better?

it has just blue colored case, it produces the Cree type of color and has a yellow chip... It says they does have IR and UV

Just arrived 3 of epistar bridgelux loaded 1800W lamps 140$ each =D, they are Blue, and they produce clee like color dunno how good are they, but the supplier said they are much better than the purple cobs loaded lights...