How important is it to have stable alkalinity for a reef tank? It’s VERY important. In fact, on my list of Top 10 Tips For Keeping a SPS Reef Tank, I have stable parameters, especially alkalinity, at #1.
Yes, a sudden change in alkalinity can be very detrimental to sensitive SPS corals so it is best to monitor this parameter on a daily basis. For years I had been using a hobby grade test kit from Salifert to track alkalinity but I was only doing so on a weekly basis. The Salifert test kit is very easy to use but it is not economical to test each day. And, call me lazy, who wants to manually test alkalinity EACH day?
Necessity is The Mother of Invention MORE