Build up on a tank

[MrsMegMichelle]

A few days ago in one of the local Facebook groups someone was moving and had to sell off quickly. I bought a 75 gal freshwater tank that's 2 yrs old with a custom cabinet stand and top hood at a great price. Only problem is it has a TON of build up. White crusty type build up around the top 1/4th of the tank.

What can I safely clean this with?

 

[Tacit Blues]

Can you scrape it off with a razor blade?

 

[Fresh2o]

Vinegar (followed by rinsing) can be used to dissolved the buildup.


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[Caliban07]

+1 to distilled vinegar. adding a touch of baking soda makes a good mix for tackling limescale which is what I assume the build up to be.


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[MrsMegMichelle]

Can you scrape it off with a razor blade?

a lot of it can be

 

[Tacit Blues]

a lot of it can be

I'd start there to get the big chunks and then move on to the vinegar.