How to maximize robustness and dependability in aquaponics systems

Rules of thumb for avoiding system breakdowns (leaks, floods, fish kills, etc):

1) minimize points of possible failure (e.g. fewer pipe fittings = fewer potential leak points; larger pipes = lower risk of blockage; etc)

2a) have backup redundancy (e.g. backup aeration system that kicks in automatically when power goes out)

2b) use a blower to aerate AND to pump the water around the system, and use another blower as the backup (this way you always have both aeration and pumping)

3) bigger is better (more gallons = more stable water chemistry and temps)