In alchemy we attempt to fill a need, often either for research or refinement.
It's clunky to fiddle between how much capacity needs to be added to answer a drain
Solution: add a button which attempts to fill all drains with available free slots
Example: I want to create dimensional cores, of which I add 5 to be refined.
I find myself with a drain of -10^6 space.
Which is negated when i press the Balance button by adding 22 space transmutation