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Just wanted to see what other people were using on their "nano" tanks to help with calcium and other essential elements needed by corals? On larger systems I have dripped Kalk, but not sure if I want to take the chance over dosing a 14g biocube. I have also used Seachem plus, calcium, and complete with good results. Just looking for some feedback for this new biocube project (my first nano) that I am putting together right now. Thanks.