Never had diatoms this bad. What are the white caps on the top of the rocks? It's like the only spot algae refused to grow. Lighting is set as low as possible (turned blue off to take pictures). I have new chaeto coming Friday along with apocalypse pods and phytoplankton. There are little air bubbles on the glass from the algae. Totally weird! I did a hydrogen mix dip that killed my chaeto before I was going to add it. I want to buy shrimp in person but have to travel 50+ miles.