get an RKL level 1. 99 dollars, and it will control your heater, control a fan if you tank gets to hot, time your lights, and shut your lights off if they get too hot. I think it also monitors your PH.
You simply can't beat that... 99 dollars for all of that is better than any ranco heating controller IMO.
It also gives you the option of upgrading the system to control and monitor more things in the future if you wish.