Sadly I have to agree myself in my 240g I had to go more hands in but I still think sometimes even in large systems we can settle back a bitWhen I started my first reef, in a 55, I didn't worry much at all. I rarely tested parameters, and dosed very sporadically - just regular 10-15% water changes with good salt. I had incredible success. This prompted me to upgrade to a 90 and, later, to a 120 - where I was, for years, much less successful using this hands off approach. I really struggled to get anything to grow (or, once growing, last), until, almost ready to give up on the hobby entirely, I started micromanaging about a year ago. I've been able to adopt a more hands off approach recently (mostly because I now have a Neptune monitoring everything for me), but, in my personal experience, for medium to larger systems, obsession is kind of key.