Hi the first question is I've got a CoolAnt leak and pretty sure it's coming from the tank.
The leak seems to be coming from underneath the tank only a slow drip, what should be connected to the tank? Is it just the top two pipes?

It seems to be leaking from a small square but poking out the bottom.


The second question is

What is this in the engine bay, as it's just been wedged in and not sure what it's for, thanks for any help