So now updates on this
I switch to Netlea aquasoil I love it, it has good nutrients and stays together very well.
Oase 350 and an Oase 100 with an in-line co2 diffuser
I am getting a 1.35 PH drop
With lights on for 7 hours
Ei dosing using Burr aqua micros
I have 6 Pygmy corydoras
And 4 ottos