I have 5 anubias in my cichlid tank but I am unable to keep the leafs green. I always end up with a light brown covering on the leaves. The only thing I add to my tank for the plants in flourish excel. I was adding flourish but it was causing a major algae bloom. My lighting is 2 x T8 marine white lamps (25w each) over a 180 litre tank, I'm also running phosguard phos remover. I'm currently waiting on new test kits so I dont have a nitrate reading till the end of the week