I am making a water level system using two flow sensors. One will be fixed to pump and another to over head tank outlet. I will interface the sensor outputs to INT0 and INT1 or T0CKI and T1CKI pins. If water is being pumped and at the same time water is being drained from over head tank both interrupts can occur at the same time. How to solve this issue. The rate of flow of water from overhead tank outlet will be less compared to the one being pumped to overhead tank.