<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by reefburnaby:
Hi,
kalk = Ca++ + 2 (OH2-)
CO2 when mixed in water becomes :
CO2 + H2O <=> H2CO3 <=> H+ + HCO3-
where H2CO3 is a carbonic acid and HCO3- is a bicarbonate. Okay...so, when the two mix...you get :
Ca++ + 2(OH-) + 2H+ + 2HCO3- <=> H2O + 2HCO3- + Ca-. So, the alk stays the same...but no more CO2 and one more Ca++.
- Victor.<hr></blockquote>
I do like chemical equasions
but don'f forget Victor that the equasions you are using as a example are assuming all you have is "PURE water, PURE kalk, and C02". and all in exact ratios. we all know there are hundreds of other chemicals in the tank that will cause all new and exciting reactions to happen. so in all practicality it is ok to use the equasions to get a idea of what is going on but unless you want to do a studdy one every element in the tank and there ratios and then bring up the effect that motion of the elements and temp cause.. well you see I alreays would have packed it in [img]images/smiles/icon_smile.gif[/img] I love Chem but not that much
Steve