Interesting conversation. Thanks for all of the great information. Over the last year or so I dialed my Alkalinity in at 9.5 dKH, Calcium 450 and Magnesium 1,350 using Randy's 2 Part recipe (Thanks Randy). This is done through a Dosing pump. But recently, my Alkalinity started rising slowly to about 10.3, Calcium 460 which was probably caused by my Magnesium being depleted over a month or so without being replenished which is to be expected. However, what I don't understand is since I decided to lower my Alkalinity to 9.0 and now that I drastically cut the amount and frequency of my daily Alkalinity and Calcium dosing, I've only seen a small drop to 9.9 and 450 over the course of a few weeks. Before, if I went a day without dosing, my Alk would drop almost a full point from 9 to 8.2. I am now dosing 1/3 of what I used to dose and my levels seem to be holding steady. I test Alkalinity with a Hanna Checker and the Reagent I was using is not on the recall list. I also, just bought more reagent and tests were confirmed. I have had no major tank change or die-off of coral. Am I missing something? Oh, and just in case someone asks, I have been using the same batch of 2 part throughout this time period, so I don't think it is due to the solution being stronger.
240 gallon mixed reef
