sounds pretty cool I have an excel spread sheet that I keep with all that on it. I have lots of fun making graphs to compare certain things. An USB PH
moniter would be cool. but I have taken readings throughout the day before and the changes are quite interesting. The really interesting one is a slight swing from day to night in specific gravity. I haven't figured that one out b/c temprature is pretty consistant i.e. changes a degree or two week to week but stays pretty much the same day to day. Interesting how iodide fluctuates during the day as well.