Red Sea reefled 90 "houston we have a problem"

[klavmaister]

Bought two rl90 used, they have been used for about 14 months in another tank before I bought them. After two months of use with me I decided to pop off the lid of one lamp dident spinn. Thought at first it was the lamp where the fan dident spinn that was the problem. When I opened the lid I was a little surprised...Salty residue? no, burnt dust? no....It is the paint on the cooling fins that is peeling off. that lamp where the fan didn't turn, I got it working again, but see that the ball bearing or something has rusted. it may appear that the lamps do not tolerate moisture well, or that the heatsink/fan is undersized.

Red sea claim the coolingribs are aluminium, but am i double....

 

[blaxsun]

Fairly certain you'd notice if they weren't aluminum...

 

[TangerineSpeedo]

Looks like aluminum corrosion to me.
Aluminum will expand and contract with heating and cooling. The powder coat probably created a cracks with that process and corrosion followed. In reality if you want to fix it, take the heat sink off, sand blast it and paint it with with a paint that has elastomers in it like vinyl or bumper paint.

 

[klavmaister]

I see, so in reality it doesn't matter, just visually less attractive?

 

[TangerineSpeedo]

I see, so in reality it doesn't matter, just visually less attractive?

Personally I would try to stop the corrosion even if with a wire brush and some nail polish. You can get black at the dollar store...

 

[Borat]

it looks more like 14 years of use rather than 14 months.. my ReefLeds 90s are pristine clean inside (3 years of use) - only the fan collects some dust..