super glue tube

[Texreefer]

So I was looking at my tank today and catch a glimpse of something green way back under the rocks,, come to find out it was one of the very first tubes i used when i started putting corals in my tank.
i guess it fell in and sank to the bottom without me noticing it. had to be at least 6 months ago.. there was no rust on it but i did have coralline growing on it needless to say my tank has a more open look to it after 4 hours of removing and re-setting corals

[LoneStar]

I've been using those 'single' servings of shrimp with the foil lids. I've seemed to drop a few in while tossing the shrimp into the tank. Well those green star polyps have started to grow over them!

[caferacermike]

Aluminum doesn't rust. Was it covered in coraline?

[Ram_Puppy]

it does oxidize though, but the oxidization forms a barrier preventing further corrosion.

[LoneStar]

nope the green stars covered it before the coraline did!