Aaand it happened again lol. Plants are fine, no wilt. I made a new habbit of daily CHECKING for pump vibration on the manifold, and there was nothing. So i tried to unstick the pump and still nothing. So I took the pump out the casing was bubbled-out and pump is dead. Guess that pump was on its way out! I did have it for 5 years in storage. Changing pumps every 2-3 years is yet another check for my list.