Hi Greg,
I did manage to get setting the temp and time working (as well as be able to set it). I posted it on my blog:
http://www.diy-labs.com/aquaduino/arduino-aquaduino-code-rev-01
The * button goes to a config screen and # button shows you the settings. I'll make a video and put it up on the blog too.
Temp goes in as 4 digits last two (79.50 = 7950). I've added in some code to make sure you can't enter 100 degrees and stuff.
All the date params can be set except seconds and day of week. Seconds I don't really care about, but day of week could be useful in dosing etc.
One thing about the date. When putting in a day less than 10 you have to put in the leading 0. Not sure why yet because I haven't looked at the code in 2 weeks (since I got the temp working). I bought non zero crossing SSR's so my progress has slowed until I have money to buy more.
Anyways, hope this helps you.