Part of my monthly maintenance is to make sure the minerals the corals need are supplied to my aquariums. I do this with testing and water changes, but the TM tank has a size that makes me want to supply extra minerals. Otherwise I would have to allocate too much time into the water changes. So instead I dose Tropic Marin Bio-Strontium once a month, to keep it balanced. It's not a mineral you want to overdose, so I go easy on it and dose at half the recommended dose. I add it slowly as a powder in the sump. I recommend you use your ICP tests to make sure you don't overdose minerals. Mine are spot on luckily. - Samuel Christensen