|| is calcium bicarbonate not a ph buffer then?....it must be present in
|| the tap water to enable the snails to grow their shells in the first
|| place......the coral is made of the same compound right? so that will
|| be a direct replacement for the useage of the snails?

Calcium carbonate is an additive, mainly used for reef tanks, helps keep the
corals and shell animals healthy, and no, it's not actually a buffer... what
*is* a buffer is sodium carbonate..aka.. baking soda.. Arm&Hammer....

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