No dosing at all. I have increased feeding but I have cut out all pellet food and gone to all frozen
Sent from Earth
You might have added too much and too quick the frozen food.
The biology need to adapt first to it, likely you fed white bacteria strains to overpopulate.
Like I said, try first reduced feeding and keep lights off for a day if you experience that again tomorrow.
Let me know if that helps somewhat.
Can be other things but it looks like the above for now.
Have Air pumps and airstones ready in case of a sudden bacterial explosion and the water becomes real white!
-Andre