<a href=showthread.php?s=&postid=8468664#post8468664 target=_blank>Originally posted</a> by mhltcob
I would add it to a high flow area...for ex. sprinkle it slowly in front of a powerhead outlet. IMO it is better to add it to an overflow drain or another high flow area of the sump. This way you will avoid having the biocalcium land directly on a coral. You do not want to mix the biocalcium with R.O. water before adding because it will precipitate out calcium carbonate.