yep thats their site, they have alot of helpful things on there also, forums for aditional coding and how to programs. they also have links to a few reviews about the whole controller in general.
the first version apparently wasn't that great but this current open source controller is great, and a good bang for your buck. it does everything the apex does but it has a colored LCD screen and it costs $219 for the basic system with ATO temp and PH probes, also has 8 controlled outlets. its really a cool system and has a ton of abilities