Hey, everyone. I'm reading up on freshwater aquarium-keeping through a book that I've purchased, and I am on the topic of pH and chemicals inside the water. I had trouble following along, due to its usage of chemistry equations and terminology. I've never took chemistry and I do not understand it. I looked up pH on google and on the wikipedia page, it just seemed even more difficult and advanced. Can anyone simplify pH to me in the most basic way?