Well FWIW, I've been dosing CSM+B in my 20g growout. No fish or inverts, just cuttings. I have to say that growth is more lush than in the 75g using Kents macro trace.

The pod population in the growout tank exploded, I'm assuming becoause there's no predation so I can at probably determine that my H. Reidiis are eating a lot of pod in the main tank.