DIY Kalk in 100 Seconds!
Diy kalk, uses two soda bottles, connected, and is fed by my auto top off.
The valve on top is to "bypass" the Kalk if I need to fill up my tank with just water or I need to cut back on Kalk.
Cost me $0, and works very well. The kalk gets mixed every time water enters because the hose is "submerged" in the kalk at the bottom so the water has to "pass through" the kalk and stirs it.
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