I have three tanks right now for the fish and newts. The tanks have been named Hogwarts (up high on a shelf), Winterfell (has a chiller in the tank), and Atlantis (furthest tank from my computer). It's important to make sure the creatures are healthy and happy so I've started keeping data on the water quality in the tanks. This means each week I test for: Ammonia, Nitrate, Nitrite, Hardness, Chlorine, Alkalinity, and pH. I chart the data in a spreadsheet. Believe it or not, the first time Arthur and I started doing this it was a date night activity. My husband is awesome.