I need some double checking, as my remembering isnt working too well lately.
I'm pretty comfortable with my water parameters... my tank is barebottom with pretty high flow. My nitrate level is peaking around 0.5ppm, so thats good. My
stony corals are growing well enough. BUT, my magnesium has always been on the lower end of the scale. I tested today, though I just did a large water change yesterday so everything is on the higher end of the scale. I'll give a typical range too.
Calcium 380ppm (normally 370-380)
Alkalinity 10.7 dkh (usually 9.5-10 dkh)
Magnesium 1200ppm (normally 1130-1180)
pH daily range from 8.15 - 8.30
temp range from 77.5-78.5
So three questions-
1) I don't really care to fix anything that's not broken, and I am
really not interested in manually dosing anything on a regular basis (I use a calcium and
kalkwasser reactor), but would it do me any good to increase the magnesium concentration in my tank (good being defined as quicker growth of stony corals)?
2) If I raise it once, will it stay there or is magnesium depleted on a pretty quick basis (the only replinishment I'm doing for mg is water changes with ReefCrystals salt, about 15% water changes every 2-3 weeks)?
3) What's the best way to increase it if I chose to do so?
I've read
this article, though I need to go over it again. What I'm really looking for is practical experience and application, though if someone can simply explain the relationship between magnesium and the calcification of stony corals, that'd be welcomed too!
