Okay, so as the brown patch is enlarging, the leaves of the affected plants have turned brown, to transparent(ish) and then fallen off/disintegrated.
All that is left of the affected area is green stems so I'm guessing this is a good sign?
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80L Opti White heavily planted open-top tank: JBL CristalProfi 1501e containing a range of filter media; EI dosing; pressurised CO2 with Lily Pipes and Surface Skimmer; Finnex Planted+ LED Light. Neons, Embers, Pygmy Corys, Amano's and Oto's ..and I'm in love with it.
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