Rust in My Blichmann Therminator

Hi All -
I couldn't find any threads that had any answers so I thought I would start a new one.

I have started to see some rust on the inside part of the influent and effluent ports on my therminator. I imagine that there might also be rust on the inside of the terminator itself.

Is this thing still good to use? Has anyone else had this problem? I used my back flush tubing to flush the blichmann after every use, but have obviously still have had some issues.

Thanks.

Are you cleaning it with an acid? If exposed too long, that can cause rust like oxidation.

There shouldn't be anything in there that will rust.

^ Right. I'm thinking the OP is looking at beer stone...

Cheers!

Can you get a good photo?