I added new (30lbs.) Fiji white live sand from West Mariculture to my existing sand which is 2 years old. I did not stir the new sand in with the old I just put it on top. I am now seeing a lavender looking substance leaking up through the sand in several places. Is this something I should be concerned about our what? So far it doesn't seem to be causing any problems YET! If anyone has seen this before or you have any suggestions on what steps I should take it would be appreciated.
Tanks
Tanks