What is this gunk in my storage container?

[NedFlounders]

Over the past few months I've noticed this stuff building up on the insides of the container that I create my salt water in. Decided to clean it out and this is what it looks like:



This is the remnants from the bottom of the storage container:



Any ideas?

 

[bonjorno2]

What kind of container is it? Where did you get it from and was it new or used?

 

[CafeReef]

If it doesn't come down to the container, it looks like calcium build up to me. what kind of water?

hell could even be crusted salt

 

[ForeverNoob]

if it doesn't come down to the container, it looks like calcium build up to me. What kind of water?

Hell could even be crusted salt

+1

 

[ItzJustinN]

calcium carbonate precipitate.
have a read: http://www.reefkeeping.com/issues/2005-07/rhf/#2

 

[NedFlounders]

calcium carbonate precipitate.
have a read: http://www.reefkeeping.com/issues/2005-07/rhf/#2

That's it. Thank you!