Great thread, I'm trying to figure out the best approach for Kalk with my tank. I have a RedSea 500L all-in-one tank which has a "hidden" ATO reservoir behind the main display tank, that gravity feeds the return chamber of the sump, controlled by a float switch.
I made the mistake of dumping Kalk powder into the ATO reservoir - problem with this setup is that water feeds in from the bottom of the reservoir, so I fed the slurry rather than the clear saturation. Nothing crashed, but not pretty, and there is still some gunk in the bottom several months later.
Plan B was to dump calk into the bottom of a brute trashcan like sk8r's diagram. That kinda worked, but I tend to pump about 30g of water into the reservoir at a time using a large pump. The power of that pump would disturb the sediment so I'm adding cloudy water to the ATO again.
So I switched to a dosing pump and additivies for Ca, Mg and Alk. Which is working well but is very expensive and annoying to but additives. So I would like to go back to Kalkwasser and use the additives only to supplement any shortfall.
I see two options
A] Run my RODI filter into a large pail and dump calk in there. Syphon from pail A -> B and pump the clear solution from B -> ATO reservoir
B] Copy Sk8r's setup and somehow have the pump sit much further up in the pail so that the running pump doesn't disturb the kalk on the bottom
Make sense? Anyone here doing something similar and suggestions which method would work best? How do you rig the pump to sit that high the pail? Looks like a good idea. Maybe I could suspend some eggcrate in there to make a platform?
-droog