Haelstrom Posted April 24, 2015 Share Posted April 24, 2015 I've had this redish brown algae looking stuff on my sand bed for a couple of months now. It pretty much disappears when the lights are off and comes back when the lights are on. But it seems to only be in the shaddy areas. Never out in the open on the sand bed. It is under the edge of rocks and under corals in the shadows. Link to comment
FlowerMama Posted April 24, 2015 Share Posted April 24, 2015 Dinoflagellates more than likely but if you have a friend with a microscope have them check it out. Dusty, right? Like you can rustle up the sand and it just falls back into place. Link to comment
ndrobey Posted April 24, 2015 Share Posted April 24, 2015 Vacuum it up. But if it is dinos, you've got a problem. Link to comment
amphipod Posted April 24, 2015 Share Posted April 24, 2015 Dinoflagellates more than likely but if you have a friend with a microscope have them check it out. Dusty, right? Like you can rustle up the sand and it just falls back into place. that or if not dinoflagellates its probably cyanobacteria. Link to comment
dillct Posted April 25, 2015 Share Posted April 25, 2015 Look like diatoms to me...no big deal. I wouldn't do anything other than change out my di resin (if needed)...usually an indication silicates are getting through. If it were dinos you would definitely know as you'd have brown snot with bubbles everywhere. Link to comment
Steve973 Posted April 25, 2015 Share Posted April 25, 2015 It also looks like diatoms to me. Dinoflagellates are fuzzy and slimy and they develop floating strands with bubbles. I don't see any of that in your pictures. Link to comment
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