Nov 1, 2020 #1 siPECTINIA New Member View Badges Joined Sep 7, 2020 Messages 13 Reaction score 5 Location Michigan What state or country do you live in 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 Verified Community Expert Reef Chemist View Badges Staff member Super Moderator Ultimate Member Partner Member 2027 Excellence Award R2R App User Expert Contributor Article Contributor R2R Research My Tank Thread Joined Sep 5, 2014 Messages 90,823 Reaction score 95,295 Location Massachusetts, United States Rating - 0% 0 0 0 Might be precipitated amino acids (some are not especially soluble).