He uses Reef Crystals since the day it was setup, never once changed brands. His maintenance, almost nill. Maybe a 20G a month water change. For the first year he didn't have a CA reactor, just dosed 2 part every few days and just put a cup of each in, never really testing or measuring what he put it. In the last 6 months he added a CA reactor and Bio-Pellets. I think he may run an algae magnet over the glass about 2x a week. Seriously, super low maintenance and small monthly water changes, maybe run a test or 2 once a month for CA/Alk. His tank is pretty much on cruise control.