I have Dwarf Sagg in my tank and it has been the most prolific plant that I have ever grown.....in fact it had grown in so dense that I had been planning on pulling it up and getting rid of some clippings. Over the course of a couple days an entire section just started dying! It would get gray/brown and translucent starting from the bottom and moving up to the leaf. I have pulled it all up (I should have taken a pic) and replanted the healthy stuff, but I was wondering what caused it? Has anyone ever had this happen? Could it be that the plant had just grown in too densely? I'm just looking to keep it from happening again.