<https://www.bulkreefsupply.com/content/post/calcium-alkalinity-trace-elements-maintaining>
<http://schema.org/description>
"Maintaining calcium and alkalinity in your saltwater aquarium is essential to the health and growth of your corals.  This episode of BRSTV explains how calcium and carbonate directly affect the growth of your corals and the various ways to replace these elements in your tank’s water through water changes,"
<https://www.bulkreefsupply.com/content/post/calcium-alkalinity-trace-elements-maintaining>