I2C To Serial LCD How?

Hi there I'm new to adruino and I need you help to make this to work. So I want to propagate Parrots in my home and here is the problem.I was looking for some way to control the environment in the room and the closest thing was this project

http://arduinogrc.blogspot.com/

This is for garden but will work for me too.With that I can control temperature, light and humidity.My problem is that I have I2C LCD but this sketch is for Serial LCD like this one https://www.sparkfun.com/products/9393 so I need to find a way to change the code to work with my display.This is the code

GROW ROOM CODE

Please help me or explain me what to do.Thanks