I will see how a very light coating of stove cleaner will go on it
tomorrow,
obviously washed out very well afterward. I am preparing the tank for
probably about 2 months away, so plenty of time to do many rinses and
washes
and testing before putting anything "live" in there...

Just be careful with the oven cleaner as some of them will perish rubber,
and (I don't know) maybe silicon.

Cheers

A