I am also away from my reef tank every week for 4 days in a row, a tank controller is a must. I also keep a IP camera on the tank, so that I can check in. I recently added a 3 Chanel dossing pump which helps keep my levels consistent. A battery back up will automatically run a circulation pump for 36 hours if power is lost while I am away...just some things to consider.
Bryce
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Red Sea REEFER 450
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