kalk in ato

[evaneatspie555]

k so i heard that some people put kalk in there ato reservoird. my kalk says to make the selution then let it sit and get rid of all the bad parts and only use the clear part should i do that before adding to my ato water or could i just mix it in there and have my pump line above those parts. im using an aqualifter pump so i can lower and raise the line at wich it will pull in the water?? any help is greatly appreciated