I recently set up a 90 gallon with all dry aragonite sand and mostly dry rock..seeded it with some stuff from my previous tank.....I'm seeing what I hope is diatom but fear dinos....the previous tank had a dino issue.....I haven't seen air bubbles yet so I'm hoping its just diatom, but it seems severe for diatom. I know dry sand/rock can be known for causing silicates and diatom and I've seen an explosion of pod population (also seeding tank with fuge rock periodically)....dino is a fight I never want to face again and I'm just looking for some opinions. ...I'm going to start running my carbon/gfo soon as well