you should go with the bigger ones (3070 or 3590- this is a monster, when it comes out) because you get better efficacy. I know i can't explain that well to you, but it has been explained to me that using bigger wattage cobs will give much better effect than using more of those smaller ones. i...
that way; where every cob is on it's own heatsing with fan is very good for smaller grows because you can raise or lower the light according to your plant's height. if you are planning a larger grow then it is better to get long heatisnks and put let's say 3 cob's on each one with one or two...
hey Oldn, here you have two threads: https://www.--------.org/t/diy-led-cree-cxa3070.789575/
and this one: https://www.--------.org/t/another-cree-cxa3070-diy-thread.824364/
Read those two threads and you will leard all about how to set up a cxa 3070 diy...
wheely forget about 3w color led's. Go get some cree cxa3070 3000K. This is the best all in one led. run it on 55W and you get a whole LOT of light, wich also has 14% of blue so it is very good to veg and flower with. Google cxa 3070 diy thread and you will find 2 journals with amazing growth...
hosebomber i'm sorry if i don't have as much exp as you but, i believe that using normal white (4k-5k) leds is very useful, or even better that using only red and blue led's witch, for me, don't really make sense. Let me explain.. white led's have ALL the colours in the spectrum,
but don't have...