No PH controller. I agree, I will probably need to increase the bubble count, but I have it intentionally low at the present. I am following this guide to tune my bubble count: https://docs.google.com/document/d/1VVDp1UOhxK1by9ofK0K83q2RyArEAEYtueOuUFy4SzI/edit?tab=t.0
Unless you mean the...