Water changes!

[Redrover]

What size tank, not that makes a difference, I would disagree on monthly water changes...Don't forget the trace elements in doing water changes.
Your lucky not having any spikes, as most reefers I've talked to have gone through theses spikes...Not just one time, a number. I've had many tanks over the years , starting as a young lad [ freshwater ] now a senior, decided five years ago to try saltwater, after a number of tank I'm still learning.
Like I said if it's not broke don't fix it. I'll stay with what works for me [ once a week ]

Good Luck :RJ