Search results

This diamond-based thermal grease seems to have much higher conduction - http://www.newegg.com/Product/Product.aspx?Item=9SIA3TW1DJ0649 JunPus JP-DX1 Nano Diamond Thermal Grease(1KG) Thermal Conductivity 16 w/m-K Thermal Impedance 0.05 cm²/W Specific Gravity 2.7g/cm³

Hello guys i ordered and checked some 1500mA drivers from ebay\aliexpress i found those to be the best - the results of 3 of them, with CXA3070 are: 1467 mA 37.9 vF 1477 mA 37.61 1466 mA 37.5 they are light weight, compact, and more solid then others ebay drivers i checked. and if you...

If anyone is intrested, here you can find CXA3070 AB bin, 35$ minimum order 20 pieces. https://www.verical.com/pd/cree-misc-products-cxa3070-0000-000n00ab30h-862108

That's because i want an even light distribution. on the four bars build, there will be four COBs spacing 30 cm apart. and the four bars will also be 30 cm apart. so i will have one COB for each squere feet, exactly. on the second build, i will have the COBs spacing 40 cm apart, and so will be...

Thanks supra !!!!

Thanks for the answer supraSPL! your halp is priceless. so you think 600w of COB power to cover 4' x 4' is too much? that about 38w per squere feet, recomended 25-35 w per feet? it mey be a little bit too much, but if dimming down i can figure out the right power for the plants. i know the...

thanks for the reply supraSPL! i know 468w is enough to reaplace 600w HPS sucssesfuly, but i want to have more buds then from the HPS... so i would like the builds to be able to operate between 450-600w, like the first build. if i will use the hlg-185H-C1400 i can only dim from 468w downward...

Hello guys! i am in a project of reaplacing 2 x 600w hps with CXA3070 build. one lamp will be reaplaced by 16 COBs, mounted on four 39" long, 4.23" heatsink. stream of four COBs per bar, powered by MW HLG-120H-C1050B on each bar. the second lamp will be reaplaced by 9 COBs, mounted on...

Well, by her answer looks like they are at high demands at the moment, and she ran out of them. i will keep looking, i think if won't find i will go for the vero29 then.

Thanks supra! i sent her a massage, i hope for good news. i will update here when things will get going.

Ohh, so it's possible to get genuine 3070s from aliexpress. great news. can you please tell me which seller did you buy from? i am looking to buy 30 pieaces of 3000k AB, and i want to make sure i am on solid ground before sending 1,200$ to china. Thanks!

Thanks aquarius, i was wondering about that. i don't tend to mix light colors, i think that more of a thinking for the 3 watt diods panel. with so much COBs options there must be some "perfect" cct for each task. this light is just a small one for veging mom, so i dont want to invest much in...

Thanks Abique! and what is your opinion about 70 or 80 cri for the 5k? the 80 cri at 350mA is 129 lm\w the 70 cri at 350mA is 141 lm\w http://www.bridgelux.com/wp-content/uploads/2013/10/DS30-Bridgelux-Vero-10-Datasheet.pdf probably the 70 cri is more toward the blue, and more lm\w so wil...

quik qustions for the experts here - what is the recomended CCT for keeping mother plant with vero 10? i am building a 30w light for mom, want to use 4 vero 10 driven at 300mA i it's the 5000k, 80 or 70 cri ?? or is it better with the 4000k 80 cri? thanks for all

if you can get from heatsink usa, you can have more options in terms of size and lenth the heatsink i use from rapidled is very comfortable for making one lamp for small grow, it has the 'splash guard' thing that allow you to cover and protect the COBs when the lamp is not in use. their new...

I am runing the same heatsink from rapidled with two CXA3070 at 1.4A i used the dril\taped holes for fastening the ideal cob holders, another benefit. no need to drill myself. i use 2 120mm fans for active cooling, which is defenietly over kill...

Thanks for your answer Mechmike! you cleared up things for me. i will go for the 3500k then. about the molex wires, i was worried it's to thin for our purpose, but 18 AWG is ok for sure. i kept searcing and find this chart - look like the 3 on the bottom are all 18 awg -...

Hello gang i am not hanging alot in this forum, but i know this is the place for DIY leds i built already 150W led bar with 3 CXA3070 driven at 1.4A to supplement my 2 600w HPS, and i am happy with the resolts (thanks for all the heros here - you gave me the inspiration) now i want to build a...

Hi guys!! finelly foundnthe problem - root rot!!! aaaaaaaaaaaa just 2 weeks to harvest!! i lifted up 2 of the plants and checked the roots. brown. i stil have some fear it the brown slime come back, but unlikly after 40 days i havn's see it. i also think root rot in dwc cause the PH to...

i have 2 PH pens, calibrated every 3 days.