Calcium Oxide

From RTAW Reefpedia

Chemical
Calcium Oxide
Common Name(s):	Quick Lime
Molecular Formula:	CaO
Used For:	Substitute for calcium hydroxide Maintaining calcium and alkalinity Killing Aiptasia sp.
Caution:	Corrosive Don't inhale dust Avoid skin and eye contact
Material Safety Data Sheet:	Calcium oxide

Introduction

Calcium oxide (molecular formula = CaO) can be used as a substitute for calcium hydroxide to maintain calcium and alkalinity levels. It should be handled with care as it has a high pH, 12-13 depending on the concentration, and therefore can cause damage to you. In particular, care should be taken not to inhale the powder which can easily become suspended in the air.