By "item network menu" are you referring to the Network View accessed with ctrl+shift+n?
My guess is that this is caused by the non-integer temperature of 213.90
since fluid tanks don't currently support pulling fluids from the network with decimal places.
The part I don't understand is why the Network View isn't showing 213 and instead shows 232. Can you please upload your save so I can take a look?
Also is it necessary that the fluid is exactly 213.90
or would it be ok to just have 214
degree fluid?