tank build journal FijiReefRock.com

[darkreef]

I second this , copper and silver are the best conductors. But they corrode ever quickly .
That's why there always sealed away in wires . Aluminum is usually used becuse it disperses the heat effected zone evenly threw out its surface area .

Would the corrosion get into the aquarium ?
I don't have the answer to that

[UQUOTE=sphelps;888030]LED build looks nice so far. Heads up on the copper though, while it's thermal conductivity is better it's capacity is lower so more dependent on fans for convection. However the reason you'll never seen copper heatsinks for aquarium LED fixtures is because unlike aluminium it oxidizes quite rapidly with a little humidity, especially with salt. So blowing air from around your tank will quickly cause the surface to oxidize and make the heat sinks less efficient.[/quote]