I've had the same Active Aqua 400 submersible pumps since I switched to hydro in 2009. I've only had one go out, and it was my fault. The pump ran dry. Recently I figured, maybe they're not pumping as hard as they used to. So I bought a couple of new pumps that are supposed to be exactly the same. One of my new pumps is really loud. It seems to work alright, but it's way too loud. My 12 y/o pumps still work, and they're dead silent. At the same time I started hydro in 2009, I purchased 2 C.A.P fixed cycle timers, (1/4 minutes on/off) and 2 C.A.P. adjustable cycle timers. The fixed cycle timers worked without a pause until I quit growing for almost 3 years. During those 3 years of down time I inadvertently left them plugged in. When I started growing again in 2019 they worked for a short time, but I started noticing one wasn't keeping time correctly. They both decided to puke. So I began using the CAP adjustable cycle timers. One stopped working, and my flower room CAP adjustable cycle timer is still running fine. It should I just opened it in 2019. So those Active Aqua pumps run for ever, but I'm not too sure about the newer AA pumps. CAP timers are no longer available. Fixed cycle timers of any kind are no longer available.