Jon it sounds like your well on your way to having a great reef. Read as much as you can.
Buying a lid to reduce water changes is not quite accurate. The lid will help reduce evaporation which in turn will reduce the amount of freshwater top ups certainly but you will always have to do regular 10% weekly water changes to replenish the trace elements that your corals and general reef function consume.
First rule of reefing. Patience. Learn that rule and the rest is gravy. Welcome to Canreef!
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