Over the weekend I discovered something really interesting from Antony, my friend's uncle, who has a PhD in science. He told me that all water has bacteria, so it would be a little pointless in counting the colonies of bacteria in my water. But I could find the breathing rate of the bacteria, which would sort of show how much of it is in there, because of this:
For Example: If there are heaps of mice in a jar, and only one mouse in a jar, the jar with a lot of mice will run out of oxygen faster than the jar with only one mouse. This happens because the more living things, the more oxygen consumed. Because of this, I can see which water will run out of oxygen first, which will show which water has more bacteria.
I'll keep the blog up to date with pictures.