I use the full lineup the flora expert recirc i think the color is from floralicious plus. It is real dark almost like molasses.
My ph is still stable sitting around 6.0. So i don't think its root rot.
few more weeks to go till harvest. Should be a nice harvest buts have packed on alot of weight and getting frostier by the day. Only 3-4 weeks left. I really don't think the ph drop was from root rot if they are still growing like this. I think it was due to a small rez that needed changed. But i could be wrong.