Don’t think it’s dinos but this one won’t go away! I turned the lights to full white for the photo to help get a pic that is as close to real as possible. It’s on the rocks, sand, glass. The big 3 are within range and phosphate is .7 nitrate around 10. Slowly taking phosphate back down after a Dino problem. Tell me what it is and if I should worry about it at all?




