IMO A temp controller is the second most important piece of equptment for your aquarium. there a little pricey... But last year i went away for three days to come back to find my tank at 89F
one of my under powerd heaters (ebo) had stuck on all i was left with was 1600.00 of Reef Soup. The $$$ i could Have spent on the controller could have saved me $1600.00
its almost sicking... Oh well live and learn PLEASE LEARN FROM ME BUY A TEMP CONTROLLER.
kris