is this bacteria or something else?

[Benj2112]

This stuff grows on my rocks, glass, equipment but not on my sand. It blows off very easily and makes a giant swirling debris mess in the tank when I blast my rocks, glass, equipment.

 

[Daddy-o]

Have you added bacteria or a carbon source?

 

[Benj2112]

My tank is a little over a year old. I started on Zeovit, so carbon there. This summer I got crazy bad dinoflangelates and have been battling them ever since. I have them down, but far from out. I have been trying what was suggested on the newer bulkreefsupply videos and recently I have been adding a good bit of a cocktail of bacteria, although I did have this before that. I have added bacteria before in my dino battle, although not in amounts that I have this past month.

Edit: I haven't been doing anything with zeovit products since early summer.