Quick Update
So I came back from holidays to the tank running well. A little diatom growth on the sand bed and some hair algae have begun growing, only in tiny amounts. I removed the majority of the live rock to give to a friend. The hitchhiker mushroomy thing (dont quite know what it is), seems to be doing well. Only current issue is that salt is making its way out of the tank and solidifying on the front of the glass and around the rims.