Hello again Craig
This will in metric units mean turnover 1.2 and pumps handling ~27 300 l/h. No particle left un-grinded for more than ~48 minutes and the same goes for oxygenation and degassing. You dilute the system with 6% daily. How often are you planning to take the system down and refilling it?
The speed is presumably high enough to keep dust from settling in your system.
You feed 0.57 kg
pr day off what protein level and to who many inches off Nishikigoi? With this data I could toy with some calculation up here in the cold north.
All your “bad” readings are 0.00 and pH is?
Thanks again for giving us something to play around with in the cold time to come.