View Full Version : low magnesium, high calcium
michelo
01/23/2006, 12:08 PM
I have magnesium in 820ppm( I throw daily magnesium tropic marin) and I want it to raise until 1300ppm, but whenever I throw magnesium now raises to the calcium and this in 490mg/l... that I can make to raise magnesium and that does not raise calcium...
Randy Holmes-Farley
01/23/2006, 12:45 PM
I'm not sure why you saw a calcium effect, but if you use a supplement such as ESV or Kent's magnesium supplements, it will not impact calcium.
You will need a huge amount.
This calculator shows how much:
Reef chemicals calculator
http://home.comcast.net/~jdieck1/chem_calc3.html
and this article may be useful:
Magnesium in Reef Aquaria
http://www.advancedaquarist.com/issues/oct2003/chem.htm
michelo
01/23/2006, 02:43 PM
thanks Randy....
Randy Holmes-Farley
01/23/2006, 03:05 PM
You're welcome.
Good luck. :)
michelo
01/24/2006, 07:54 AM
calcium I have 490ppm and KH 14dkh and ph 8.4..is normal?only I am throwing magnesium to the aquarium..
llamart
01/24/2006, 09:29 AM
That is a great article Randy. Last year my mag became very low and ultimatly I lost many organisms. To help, my LFS suggested I use Dolomite to my calcium reactor. Since then my mag level has been solid (or since i was able to bring the mag levels back up using epsom salts). But now I have a better understaing on why my alk has since been consistantly on the higher end of the desired range.
Randy Holmes-Farley
01/24/2006, 01:55 PM
calcium I have 490ppm and KH 14dkh and ph 8.4..is normal?
That is fine, yes. :)
That is a great article Randy
Thanks. :)
Using a little less dolomite might allow the alk to decline if it is too high. :)
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