Nov 1, 2020 #1 siPECTINIA New Member View Badges Joined Sep 7, 2020 Messages 13 Reaction score 5 Location Michigan Rating - 0% 0 0 0 Is this safe? Looks like dirt or something only my second bottle ever
Nov 1, 2020 #2 Randy Holmes-Farley Reef Chemist View Badges Staff member Super Moderator Excellence Award Expert Contributor Article Contributor R2R Research My Tank Thread Joined Sep 5, 2014 Messages 67,529 Reaction score 63,978 Location Arlington, Massachusetts, United States Rating - 0% 0 0 0 Might be precipitated amino acids (some are not especially soluble).