egloskerry Posted January 29, 2009 Share Posted January 29, 2009 I haven't started corals yet, but I will eventually. Is CaO fine for raising Ca levels? I have a pound or two lying around. Link to comment
TheUnfocusedOne Posted January 29, 2009 Share Posted January 29, 2009 i dont think CaO is soluable in water Link to comment
egloskerry Posted January 29, 2009 Author Share Posted January 29, 2009 CaO reacts to produce CaOH which is slightly soluble and dissolves over time. It would raise alk as well. I just want to know if there would be any negative consequences. Link to comment
jimbro Posted January 29, 2009 Share Posted January 29, 2009 afaik, mixing it with water will produce Ca(OH)2 and heat just mix it up and treat it like kalkwasser is it pure CaO? Link to comment
egloskerry Posted January 29, 2009 Author Share Posted January 29, 2009 Yeah. Never used kalkwasser, I'll have to look into that. Link to comment
BKtomodachi Posted January 29, 2009 Share Posted January 29, 2009 Yeah. Never used kalkwasser, I'll have to look into that. its a much better alternative, lol Link to comment
egloskerry Posted January 29, 2009 Author Share Posted January 29, 2009 I meant I'll have to look into what it is. I've heard it here, but have no experience with it. I can get many raw chemicals pretty cheap, so... Link to comment
jimbro Posted January 29, 2009 Share Posted January 29, 2009 all it is is hydrated CaO do a search on kalk. it'll raise you're pH, alk, and help precipitate phosphates, but it's a bit of a pain in the ass to use. what size tank do you have? if your only goal is to raise calcium, i'd use CaCl2, or read this article and go from there http://www.reefkeeping.com/issues/2006-02/rhf/index.php Link to comment
egloskerry Posted January 29, 2009 Author Share Posted January 29, 2009 BC29. I'm not doing another chem order for a while, so I would order CaCl2 once I use up the CaO. Also, it'll help with alk, so I won't need any baking soda. And there's no ice salt in FL. Sucks. Link to comment
andrew.ars Posted January 30, 2009 Share Posted January 30, 2009 Without referencing the CRC if you add calcium oxide CaO to water is is going to hydrate into calcium hydroxide (Ca(OH)2) kalk) the solubility of calcium oxide is many times greater than that of calcium hydroxide therefore you will just have kalk. CaO2 + H20 --> Ca(OH)2 all Ca02 will change into Ca(OH)2 Ca(OH)2 (solid) <--> Ca(OH)2 (in soln, Kalk) any white solid remaning should be Ca(OH)2 (kalk) according to wikipedia this is an exothermic process (produces heat) and i dont feel like figuring out how much so add it slowly in a pyrex or heat safe container outside with eye protection or you can buy pickling lime at the store cheaply and you know just what you are getting. I do not know what you got the calcium oxide for but is may not be very pure since it is not food grade and i doubt it is scientific grade Link to comment
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