First app I have used to keep track of my aquariums, but its wonderful so far. I love that it pretty much suggests the ranges for almost everything you add, but you can also change any of the ranges to your own aquarium. Ive been looking for an app for quite a while and was very hesitant on paying for something I may not like. This far, a well spent $3.
M616c about aquaPlanner, v3.1.0