raeh1 Posted November 26, 2006 Report Share Posted November 26, 2006 In the last week I have upped my reef roids feeding and..... ph has stablised at 8.2 (finally But calcium has dropped form 440ppm, to 380-400ppm in a week (as I do weekly tests) I could actually almost see my coral growth this week. Cheers Quote Link to comment Share on other sites More sharing options...
TM Posted November 26, 2006 Report Share Posted November 26, 2006 Mg??? Quote Link to comment Share on other sites More sharing options...
wasp Posted November 26, 2006 Report Share Posted November 26, 2006 That kind of drop in a week is not at all unusual. As TM said there might be an issue with magnesium, but even in my own tank if the ca reactor is running a bit slow there could be a drop of that much. Magnesium is important as if there is not enough, the calcium just drops out of the water, the magnesium keeps it in solution. The correct amount of magnesium is 3 x the calcium. IE if you want calcium at 400, you would need magnesium at 3 x's that, 1200. What I do is have magnesium at 3 x calcium, plus a little bit just for safety. If you are moving more towards sps corals, your calcium and alkalinity usage will increase. BTW another thing that can increase calcium precipitation is increasing alkalinity. The higher the alkalinity, the more precipitation there will be. Quote Link to comment Share on other sites More sharing options...
raeh1 Posted November 27, 2006 Author Report Share Posted November 27, 2006 thats interesting. I have no idea what my magnesium levels are. I add the seachem calcium advantage which has strotium and mag... in it. Once a month I add 1/8 cup mag.. into the system and add strotium weekly I have more SPS than even now , so that must be it. Do LPS use as much? I do do alot of NSW changes so that should keep it up a bit ah.. I do feel like the mad hatter a bit, adding things here and there without testing. But I test weekly for ph, nirate (or is it nitrite), KH and Calcium. I add baking soda every second day to keep the KH up. I usually run off how the corals look, maybe a calcium reactor next year when I'm working again.. (oh if the wife doesn't see me carrying it in the door :-? ) Cheers Quote Link to comment Share on other sites More sharing options...
JDM Posted November 27, 2006 Report Share Posted November 27, 2006 i can test your mg, you should really have a test kit if your adding it though, how do you know what to add if you cant test for it? bring over a water sample, send me a text first to see if im home, got to get my stiches out tonight. raglan water is about 1320 mg so its all good. Quote Link to comment Share on other sites More sharing options...
TM Posted November 27, 2006 Report Share Posted November 27, 2006 I add the seachem calcium advantage which has strotium and mag... in it. Cheers The mg and sr levels are quite low in that product. You are better to add them by them selves. Quote Link to comment Share on other sites More sharing options...
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