Pond Boss Forums INTRO Questions & Observations Aquarium question

I ask forgiveness for this post but I'm an aerospace engineer and these are questions we would ask...So what happens if something else in the system fails on a Friday night or over a holiday, other than a power outage, with nobody around to notice? Does the backup system being proposed work? Would pressure be a better trigger for the backup to kick in? Second question is how long will the O2 tank supply the system? If you performed a FEMA (Failure Effect Mode Analysis) it is a finite solution which we try not to use when designing redundancy into a system. We consider this type of solution just making the fuse longer, not preventing the catastrophic failure (dead fish). That might be ok if you are flying a JSF 135; you know the duration of the mission to return safely to base, and the backup will support you for twice that time. But if you don't know how long the mission is....

Ok guys, I am ready for you to wack me!