Anyone Know What This Is?


Well-Known Member
BRS Member
A couple weeks ago I posted some pics, etc. and was wondering if I had diatoms, dino, etc. Just took some close up pics and am wondering what this is... causing my sand to clump... thoughts?


Greg Hiller

BRS Moderator
Staff member
BRS Member
I really cannot tell anything from those photos. If calcium and alkalinity get too high with a lot of new/fresh sand sometimes the sand will clump, but we are talking solid clumping.
You definitely have some hair algae starting to catch hold. Whether that is causing the clumping or not is hard to say. It will dig its little roots into everything, this causing a bunch to come up when you try to remove the algae, but I wouldn’t consider that clumping. Clumping is more like what happens in a cat’s litter box.

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