Kalk Q?

[Canadian]

Hi again Brad,

I quickly scanned through some info on the kalk slurry method and it appears the method is most appropriate for tanks without exceptionally high Ca demands. Higher Ca demand tanks would require multiple doses of kalk slurry while carefully monitoring the effect on pH. It also doesn't appear that this would be a particularly effective way of raising Ca, especially in those tanks that are either large or have very high Ca demands. I didn't see where Myka was asking about raising her Ca - I was just under the impression she is looking for a way to dose Ca and Alk without needing Mg and doing so with kalk.

However, depending on what you read there seems to be a bit of contradictory information about whether this method is best for tanks with high Ca demands versus typical demands. Some reports suggest it's good for high Ca demanding tanks where supersaturated dripping is inadequate, while other reports indicate it's best for lower Ca demands due to the effect on pH.

Here's some more info from Anthony Calfo:

http://www.reefcentral.com/forums/sh...ht=kalk+slurry

If someone was to attempt to employ this slurry method I think the most prudent course of action would be to first determine daily Ca demands, perform the necessary calculations for how much kalk slurry is needed to maintain that level, and then divide that dose into smaller ones to monitor the effect on pH. If the effect on pH is within reason (less than 0.2) then fewer and larger doses could be trialed.