that blows brother, especially mid grow, i have 3 of these systems and knock on wood for a year all good, only issues was drain pumps had vaccum issues here and there, one thing i did notice was out of 3 systems, i got 1 from htg and 2 from plantlighting.com, out of the 2 from PL one of them had a different face on the timer, my 2 have a clock with hands, this other one just has 24hour times with no hands. what model do you have, because i see too many people now adays with issues and from what i have read is that CAp is having major financial issues and quality has fell thru the floor, some of the main engineers left cap and started sentinel and redesigned this unit and came up with the MEF. i have pondered what i would have to do if a controller failed and since i have all kinds of tubs and parts, i would rig up a tub linked in the same manner that the controller is for the drain back, top feed and make it recirculating for the time being. if you need more details on how to do this you can PM me, this would involve you raising your buckets and having proper fittings and drill bits