i keep a mix of everything, but from what i remeber from your system is you are running ozone, and softies like kenyi's love dirty water as weird as this sounds your water may be too clean. ill give you a break down of my system, filtration is just my fuge(cheato) bare bottom no sand, skimmer, and chemi pure elite. water changes 20 gallons a month. i dose 2 part b-ionic. thats pretty much it i feed fish every other day, and coral gets fed 2x a week (coral frenzy and FUEL). maybe some of your other parameters are off but that my opionion from the info you gave.