I've been toying with the idea of a microscope.. just don't wanna spend the money right now.Not having luck with fish either. I’m wondering if fish just don’t like long shallow tanks. My tank, 20 long also, fish keep jumping out.
Are you still using chemipure blue? I’ve heard it contains GFO which lowers P04.
Identification of which Dino species you have will help the battle. Some Dino don’t go into water column at night. UV will not help with those.
I am still running it - my phosphate are still registering which means I'm having dinos from high nutrients.
Could be shallow reef and or my orchid dottyback having all the burrow locations