dsicus

Hi Guys,   I was going to post this last week in Tropical Discussions but I think that now it is an emergency. As seen in the second picture the bottoms of my plants are all black and I think they are dying? Also as seen in the first picture there is stuff on all the leaves which I don't know...

Hi Guys,   The stuff attached in the picture has been growing in my planted discus tank. What is it? And how do I treat it?   Best wishes,   Cameron