Low Profile - Water Cooled LED Heat Sink

chrishet

Member
Anyone out there water cooling their LED fixtures? I am getting ramped up for my new 70 gallon SPS build and I want a low profile light for my rimless shallow tank design. I love the look of the Vertex Illumina light but $2k is a lot of coin, and given that this is such a new technology change is sure to come and that means even more $'s for upgrades down the road....for this reason I am considering my own LED build.

I figured one way to accomplish this low profile look would be to dump the external fan and water cool the heat sink, or passively cool the system (which I have not seen many do). I was thinking I could easily mod a HeatsinkUSA design by simply adding in channels for pipe, copper or aluminum, and route the water either through a dedicated heat exchanger in my sump area, or I also have an old thermoelectric chiller that would probably work as well. I was thinking about using existing RO water or sump water but that would preclude using aluminum or copper I would imagine but maybe there are materials that are reef save that I could use...Thoughts?.
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If it were me, I would just inset a few fans into the heatsink. Cooling in general is barely necessary. Larger heatsinks can passivly cool LED's.

A small rotary blade to cut the blades and a pair of pliers should do the trick, if this is something you want to consider.
 
the idea is 'cool' but I don't know if it is worth it. You can buy really small fans that arn't much more then a 1/4 thick. You may need to run 2 or 3 but you wouldn't't really notice them on there at all.

Here is a unit I worked on with two regular sized fans.. i personally think it is still pretty low profile looking......
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