Stirring Kalk?

[Terry4505]

Quick question, I dose two-part via dosing pump and offset with Kalk. I put a small pump in my Kalk reservoir and have the Apex turn it on five minutes every hour. Should I be doing this? Or just mix it and let it sit? I don't like Kalk in topoff because it becomes too evaporation dependent.

Here's a video of my setup:

 

[Randy Holmes-Farley Verified Community Expert]

No, a limewater reservoir should be covered and not stirred. Stirring just serves to drive carbon dioxide into it, helping deplete it, and to suspend solids that you might refer to not be dosed.

It can sit for weeks if covered and won't lose noticeable potency.

I show that and more in these articles:

What Your Grandmother Never Told You About Lime by Randy Holmes-Farley - Reefkeeping.com
http://reefkeeping.com/issues/2005-01/rhf/index.htm

Chemistry And The Aquarium: Metals In Limewater ? Advanced Aquarist | Aquarist Magazine and Blog
http://www.advancedaquarist.com/issues/may2003/chem.htm

The Degradation of Limewater in Air - Reefkeeping.com
http://reefkeeping.com/issues/2003-05/rhf/feature/index.htm