Hi
Just ran onto this, no I am late but:
I use Roots Accelerator in Hydro (Ebb N Grow) I watter (Feed) 3 x a day (Grow and Bloom)
I just use it through the Veg and 3 weeks into Bloom.
As to your ?
I start my watering (Feed) 30min after lights on and stop 2 hrs befor lights out with one feed between.
I sound like you are feeding once a day?
I also use Hygrozyme throughout grow and Bloom, stop during last week when I flush with fresh water.
I have been using this formula for 2 yrs now with good result.
I also use AN Sensi 2 part
All the best