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Thread: 750W DIY Watercooled 20x clu048 1212 COB setup

  1. #1

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    Default 750W DIY Watercooled 20x clu048 1212 COB setup

    Ive been pondering on this for a lil while now researching and getting ready to pull the trigger on it. I have a buying list here and its summed up like this pretty much.







    It will be mounted on this aluminum tray shelf I have. I plan to bore holes for the nipples on the waterblocks and use thermal adhesive to stick them to the aluminum and thermal adhesive to stick the cobs to the waterblock.

    Topside of the shelf will be the electrical and water plumbing. 2 360mm rads and two reservoirs with.pumps and am extra set of pumps inline as failsafes. I already have static pressure 120mm fans for the rads.

    They will be running 36v and 1040ma at about 150 lumens per watt.

    Feel free to pitch in anything u think i should consider.

    The tent is 1.2 meters wide by 2.4 meters long and 2m tall.


    Price wise it sits on par with 2 1600w mars 2 led units i believe.
    Last edited by WakaWaka; 05-06-17 at 04:08 PM.

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    I went ahead and switched the Cobs to 50/50 3500K and 4000K. and am gonna hack open my Vipar Spectra 900W and 300W and use the 3 LED panels Big small Big spread evenly to get more red and IR and UV spectrum in there for flowering. The order is on its way.

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    Ordered some wire management bits and 18 awg 2 pin wire. This fleabay item# 162345544988 seems really nice. Im gonna lay em in 2 rows of Ts like so. ( TTTTTT) . no wire peeling or soldering needed

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    Hello mate can I ask the reason for going water cooled. I'm just finishing a grow using 10x cxb3590 3500k 72v running them at 50w a COB and passively cooled. I loving the results so far and am bring them down next week.

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    cause between 30$ heatsinks and a 3$ waterblock money and cool factor win.

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    You US based ?

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    Sweden, most shipping is an arm and a leg.

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    Apparently the mean well driver i bought was defective and the seller just cancelled the order. I went with a cheap 1000w 36v driver instead so the thread title should be updated this rig will be 1000+ watts once I add the vipar spectra leds on it aswell for red spectrum.

    Got a few waterblocks so I started designing and mocking up. Couldn't get the noise cancelling rubber attachments on the fans to go into the rad so I double taped them on and used the rubber as feet/spacers under the rad.

    My idea is a rad on the end the res on the other end wiring down the middle. Its looking a lil tight for the vipar spectra leds but ill open up one light today and mock up to see if its even possible




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    Quote Originally Posted by WakaWaka View Post
    Apparently the mean well driver i bought was defective and the seller just cancelled the order. I went with a cheap 1000w 36v driver instead so the thread title should be updated this rig will be 1000+ watts once I add the vipar spectra leds on it aswell for red spectrum.

    Got a few waterblocks so I started designing and mocking up. Couldn't get the noise cancelling rubber attachments on the fans to go into the rad so I double taped them on and used the rubber as feet/spacers under the rad.

    My idea is a rad on the end the res on the other end wiring down the middle. Its looking a lil tight for the vipar spectra leds but ill open up one light today and mock up to see if its even possible



    Looking forward to see how this turns out for you. What are the COBs you got there. Also what distance spacing you going for ?

    Brought down the plants I grew under the cxb3590. 500w true pull from wall and first run did just over 1.3g per W and kniw I can do better

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    The cobs are Citizen 1212 Gen 6 if im not mistaken, 3500k and 4000k 50/50 20 units. My tent is 2.4 meters wide and each aluminum shelf is 110cm im planning on having 2 rows of 5 per shelf and the vipar spectra panels in the middle of the tent.

    total real pull with the vipar spectra panels will be about 1400 watts

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  21. #11

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    What you going to run the 1212's at. Been have a look at them myself

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  25. #13

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    gonna be running em at 1.35 amps if all that current is divided equally. they are 36v

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    What watt you running them the voltage if I remember rightly is what you need to turn them on

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    36v x 1.35a = 48.6w x 167L per w = 162,324 Lumen

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  31. #16

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    Ive been getting a lil anxious as you guys as the cables havent arrived nor the reservoirs but got a lil done. Pics for the tiny progress.






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    Got most of the things i need for the light. Patience and energy to finish this damn thing is short. The kinking in the hoses was pissing me off.

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  35. #18

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    ive finally finished assemblying, ran into some issues with the distribution of the current as it was melting a connector, put a few distribution blocks and they run much cooler now. but for some reason now the lights turn on and the voltage drops slowly. to the point where the cobs turn off. to make matters worse when I up the voltage with the voltage adjustment it drops eventually to where it goes off. After letting it cool a while I turned it back on and the voltage read 140vdc. I have no idea why this didnt just explode my cobs or if its not a constant voltage PSU even though its rated 36v at 27A. Guess I might need to blow cash on a meanwell.




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  37. #19

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    Cracking stuff this mate ! I was tryin to talk my old man around into making me a DIY cob jobbie, he's godly with all things electronic. But he just rolled his eyes at me lol.

    Keep at it man, good luck

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    Quote Originally Posted by Huktonfoniks View Post
    Cracking stuff this mate ! I was tryin to talk my old man around into making me a DIY cob jobbie, he's godly with all things electronic. But he just rolled his eyes at me lol.

    Keep at it man, good luck


    thanks bud means alot, Currently waiting on the 600w meanwell to arrive.

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