[ramonesfreak]

My large Fluval FX4 fires up no problem. All the hang on backs do not start back up because in order to do so, the impeller and magnet must be perfectly clean....they never are

I have to take off the motor of each one and give the impeller a spin by hand and then re-fill the filter...what a PIA

I also have sponge filters in each one and a couple with moving bed biological filtration run on air pumps

longest i have had to keep the bare bones running in a power outage was last year for about 15 hours...generator ran out of gas after about 5 so I used my battery backup power bricks I use in my office for my computers and internet stuff to run air pumps.....saved me