I am guessing MTS is multiple tank syndrome.
Neither of us has it? The new room just needs the necessary number and the idea is to have them on hand instead of needing to scurry about at the end of the build out.
The tanks are mutually agreed upon but I really hate shopping and normally pick up what I need with little dawdling. OTH she likes to dawdle. Sense she does most of the buying.
Now, if you want to think BFS, baby fish syndrome, she is completely afflicted.
Tanks are nearly accumulated. The last couple need to wait for the construction so we can assess what fits left over space.