my nitrate is 2.3

[ChrisfromBrick]

and phosphate is 0.11

Mild green hair algae that is manageable.

Wondering if the hair is sucking up much of that nitrate. Other numbers are stable and fine. I added one cup of neo

 

[Subsea]

Normal seaweed N to P ratio is 30:1
Normal phytoplankton N to P ratio is 16:1

All biomass in your ecosystem will sequester N & P. In my 25 year mature system, I dose ammonia to keep up with N demand of system.