Brushed Aluminum Tanks - Discoloration

[Andy_Mason]

Just curious if anyone else has experienced this. Dived on Monday in a lake that was created by mining for calcium carbonate rich clay soils for use in cement production. When I emerged after my first dive my brushed aluminum tank was noticeable discolored to a light brownish hue. I'm guessing some high mineral concentration in the water caused the discoloration. While I doubt it's of any concern as far as the performance of the tank I tried to clean it with typical cleaners and had very little effect. Any thoughts? Thanks in advance.

 

[DeepSeaExplorer]

Bare tanks pickle with use. It’s normal.

 

[Barnaby'sDad]

Bare tanks pickle with use. It’s normal.

This. I call that personality...not discoloration.

 

[broncobowsher]

Wait until they see the surprise hiding under that tank boot.

 

[Andy_Mason]

This. I call that personality...not discoloration.

I like that better...thanks.

 

[Couv]

This. I call that personality...not discoloration.

I agree. Your tank gained some character and probably a measure of protection from further oxidation.