Here is the link to the final project: http://www.plantedtank.net/forums/di...ontroller.html
It is one of the few DIY projects that worked out perfectly. Not sure for how long the little relays hold up, but so far, not a single problem at all.
Thanks to the battery backup it is holding time extremely well, not affected by power outages.
Thanks for asking... very recommended if you don't mind soldering a few wires. I had a few PM's asking for specifics... don't be shy and post your solution if you built one.