After what seems like forever (but has only been about a day) I've added in 300+ lines to the Arduarium Controller code. It's really starting to behave like an aquarium controller since I can now monitor PH.

I think one of the best new features of the code is the PH configuration. From what I've seen everybody has come up with a custom formula to calculate their PH. That's not required anymore. Simply open up the config menus and select 'Configure PH' and the instructions on the LCD will do the calibrating for you.

Another one of the new features in the code is the ability to set the time you want the lights to turn on and off. There's also an option to set how long (in hour) you want the lights to dim off and on. This simulates sunrise and sunset quite nicely. Although it's really only configured for LED lights right now it will be able to handle whatever lights you have.

Of course one of the things I wanted most was the ability to save all these configuration options to an eeprom. The power went out a couple weeks ago while we were out and the consequent reset wreaked havoc on the tank. All values are stored in an eeprom so this can't happen again (provided the eeprom doesn't die lol).

Anyways, you can check out there new code here

Comments and suggestions are welcome as they've been the guiding force in the design.