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troni
03-21-2012, 03:19 AM
im looking for a calcium and alkine and mag supplement. any suggestions? or reasons why you cant have this?
whatcaneyedo
03-21-2012, 04:15 AM
It exists. Its called a water change. On a 20gal that is most economical thing to do.
troni
03-21-2012, 04:45 AM
eventually those nutrients will be below optimum.
The Grizz
03-21-2012, 04:55 AM
Caco3reef has additives at great prices.
whatcaneyedo
03-21-2012, 05:19 AM
You mean trace elements not nutrients. This article should help:

How to Select a Calcium and Alkalinity Supplementation Scheme
http://www.advancedaquarist.com/issues/feb2003/chem.htm
FragIt Dan
03-21-2012, 05:41 AM
Why are you looking to supplement?
troni
03-22-2012, 01:40 AM
to keep levels in check so my corals flourish.