Excess Demand for Alkalinity in Saltwater Reef Tank - Solution
Reef tank 6 years ago 9,831 views
In this video I talk about the issue of a reef tank consuming more alkalinity than it is getting while at the same time not using any calcium. The solution to this problem is not visible in that you can't simply add more ALK to remedy the problem. In fact, if you do this it makes the problem more pronounced in some cases. Im dosing equal 2 part ALK & CA, so normally we see a reduction in both ALK & CA. With the tank consuming more Alkalinity than calcium, I knew better than to change the settings on my Apex so that my dosing would add more alkalinity to supplement what I was loosing and then also reduce my calcium because I wasn't using as much. The reason you dont want to do this is that if you dose more of one supplement, and less of the other, you end up chasing numbers because adding more of one supplement (CA or ALK) reduces the other. This leads to great instability in a reef tank. ALWAYS dose equal parts of ALK and CA, no matter what, when dosing two part. If you have to make a correction in your levels, boost your levels in your tank with product to get your levels back into the ideal range, but always leave the dosing settings equal. (ppl who use kalkwasser dont have to worry about this because Klak is a balanced supplement.) The solution to my problem of the reef tank consuming more Alkalinity, and hardly consuming any Calcium, was that I needed to reduce my inflated levels of magnesium. Here is the article that talks about this issue: http://www.reefkeeping.com/issues/2004-12/rhf/ Once my magnesium levels dropped to normal levels, the tank started to slowly fall back into stability. The tank was now using both alkalinity and calcium again.