I will do and your absolutely right about getting balance.

I would say my drainage layer as in media is 10cm the water about 7. They think for the pump to work my water level will need to be 10cm. NH3/4 >> NO2 >> NO3, typical Nitrogen Cycle stuff but will be cool if it works.

Plant wise Pothos seem to be doing really well with the current water level and I think it will be ok with 1-2cm more