Using the Inventory plug-in allows you to keep track of aquarium inhabitants, and equipment.
The monitor interface of the Inventory plugin allows you to associate a collection of items with a particular aquarium. Doing this allows you to keep track of things like fish, plants, devices, lights, pumps... for each aquarium you own. All items can be represented using a photo, and have additional fields, like name, price, purchase date, purchase location ... Electrical items (lights,pumps,devices), also contain fields (watts, hours/day) that when entered will be used to calculate electrical costs of operating that item.
The Inventory plug-in keeps a log file (stored in the install directory). The Inventory plug-in logs sent error messages. Check the log to find out about any error conditions which may have occurred.