Necrotic pinholes in older leaves of Hygro pinna
First thought is K deficiency but since I dose at 22 ppm per week I’m reluctant to believe that’s the issue. CO2 is monitored via pH (~1 point drop 2 hrs after lights on) however, my h’ra is not as proliferative as I’d like it to be with longer internodes and hardly any pink hue—could be a flow issue with the CO2 not reaching all corners of the tank? This plant is one of my favorite species second only to buce varieties. i hate to see it do poorly! Thoughts?