Purple slime

[allincuddy]

Thanks Tbone, it is a new tank with alot of lve rock and 5" deep sand from an established tank, it mst be just cycing (hopefully a short one).
Thanks for the reply, I apreciate it.
Thanks,
Mark

[TheReefGeek]

You will go through a couple rounds of different algae and diatom blooms as tbone said.

You can physically remove the stuff too, siphon it out during your next water change.