Evolution of my 30g tall

[GrimReefer]

thank you. the kalk reactor is a complex piece of equipment (sarcasm). fresh water is pumped into the bottom where the kalk powder sits, and flows out near the top. it saves the pump from sitting in kalk, which shortens the life. and i can basically put as much kalk into the reactor and not worry about dosage or powder being pumped into the tank. as long as there's kalk in there, a saturated solution comes out.