Excess, superfluous, overabundance, overage, overflow, overkill, overmuch, oversupply, superabundance, surfeit, surplus
Yes. By definition, too much is too much. You will suffer that by which it is in fact too much
too much
He who drank too much
Countless means too many to be counted.
having too much water in your body
A surplus is having too much of something.
much better sweeter
The word is obsess. It means to think too much about something.
The word drag means a bad situation ; or something heavy that is too heavy to carry
haughtiness; too much pride; stuck-up.
mass
Depending on the degree of hyposalinity, or your definition of "too much salt", it could kill the tank inhabitants.