Good morning Reefers and Reefettes

I've had my 41 gallon (30g of actual water) tank setup for about 3 months. I beginning to get a bit uncomfortable with the thought of my heater dying and losing almost everything. What would you suggest as good solutions if any. I've read where all heaters fail at one time or another. Would 2 heaters make any sense? If so, how would I know if one failed?

Thank you,


goodgreef