Just taken it out of the rust tank and in the process of rubbing the residual rust off and drying. When its completely dry on the outside I'll give it a quick coat of rust inhibitor (WD40) then let inside dry completely.
After a couple of weeks,,when its bone dry internally I'll get about a foot of 1/2" chain on a longish string and use it to scrub the inside and clean out any final bits that may be stuck to the corners.
Then another 24 hours in the bath to complete the job.
After that see what needs doing to make it look like a beesa tank again.
All takes time.
Mike