The power bar is mainly to hook up your aquarium for automation. For example I have the full Neptune setup and it controls temp, dosing, return, skimmer, water changes, light schedules, refugium. If you just want a Neptune to ONLY check your levels, you could get the less expensive APEX EL controller, and a triton, with no energy bar. Most folks (in my experience) buy setups like this for automation purposes but yes, you could use one just for the trident. They are all WiFi, have alarms if you want to set them up, and you can view what’s happening in real time anywhere you have service.