I recently moved into an apartment, that has Gas hotwater. Annoying extra bill to pay. Anyway its just me and my partner so we have pretty low hotwater use, but we find our hotwater pressure frequently drops. I had a chance to access my hotwater tank and have attached a few pics. To me it seems the tank on the right(the tank I pay for) is feeding hotwater to the tank on the left. (The tank that supplies the landlords much larger house) Therefore it would seem like my tank is doing all the work and im paying for it. Anyway I want to be sure before I approach my landlord. Thanks for any help.