Backup Equipment - What is yours?

[bakbay]

I have the following as backups: return pump, wavemaker, heater, skimmer, salt, and RODI (275g). Both my main and backup tanks have a DIY battery backup that can run one MP40 for 40+ hrs. Both tanks are running with similar parameters so worst-case scenario, I can evacuate corals & fish from one to another (space permitting tho).

 

[randomfishdude]

I have:
2 tanks.
Both display.
If something goes wrong with one.
Wish and corals go to other.
It's a good system... I think.

 

[sfin52]

I keep back up bandaides antibiotic ointment duct tape. When working with lr I've always finished with my fingers or hands bleeding. It's never a completed project if I didn't deposit a couple drops of blood. Corals don't seem to mind