sansouci01
Aquarium Advice FINatic
My 20 gallon reef tank has been up and running for about 8 months. I've gone through all the new tank fun things like diatoms. That went away and the sand cleared up nicely. Then, I had a real problem with bryopsis. Finally got that under control and the tank really started to look nice. Now, I am starting to see a greenish kind of diatom looking algae on the sand again. Any ideas or is this another phase?