I work at sea for 4 months a year and have just gotten back into the reef scene. I have a web cam looking at the tank and sump, a RoboTank controller with custom add-ons, skimmer neck cleaner and collection reservoir, roller mat filter, ATO plumbed direct to RO and set of keys stashed in case of emergency. I check things several times a day and have had to call for backup twice. I really sweat being away but no loses so far. Knock on wood.