i am sure the ph fully degassed is more than 7 but i am not sure of how many more
For the second filter i have one more from 1 month (so i have about 2800l / h filter flow, and i have reduce the strenght of flow buy opening holes in the spray bar.
i have put some purigen to help.
For the hygrophilia polysperma yes i don t know what is the problem , i hoped you could say (you = the one who know and see my journal)
i will try a bowl water out of tank for 24 or 48 h for ph test to see if there a difference with a bucket fully shaked for degassing.
i was not completly on EI before, i have started all EI just yesterday without looking at fish poo adding , like i was doing before.
i will see if things will goes better or badder.
the thing i can say is if my ph is more than 6 the pearling is not as good as it is at 6, may i can go more ? may i try to know or we know by other experiment that is not necessary ? (that my question at this point)
having a 10 kg co2 bottle let me experiment freely many technique diffusing, and for now after the ceramic diffuseur i try the atomiseur (2 bar psi) more valve opening to the same result of ph but not more bubble out or i could say all bubbles are smaller.