I actually cant send you any pictures, I ripped apart the whole thing.
I threw out all the sand, I scrubbed and scoured every surface in the display and sump, removed every bit of the crap and drained the entire tank. Then I filled it up with chlorinated tap water, turned on the pump and put 32 ounces of H2O2 in it just to make sure everything was dead. The next day I drained all that and filled the tank up with RODI water and added all the salt I have (enough to bring it up to SG of 1.010) and I added some freshwater Malasiyan Trumpet Snails (I am going to test how well they can acclimated to saltwater). Then I ordered some more kent reef salt online, which I am still waiting on.
I put some throughly scubbed live rock in a 5 gallon hex tank on my kitchen counter (that also has a mini algae scrubber that runs off the display light) I also have my few corals frags and my mandrin goby along with my damsel in there. I have been treating it daily with about 5 ML of H2O2, and even still that shit is growing in that 5 gallon tank, and I wont be able put my livestock back in the main tank until it is all dead. However I need that to be relatively soon since I am basically starving the fish in that tank to avoid feeding the plague.
EDIT: The stuff starts off growing in a clear slime and gets thicker and thicker, it is about the consistancy of snot, but smoother, without lumps. I dont think it is actually brown, I think it just gets that way from collecting crap, and it is clearly either photosynthetic or just likes light, because it definately grows better in light. On my algae screens it was about 3/8ths of an inch thick on both sides of the screen, and grew in a perfect circle where the circle of light was. It takes a while (a week maybe) before it starts gathering or producing bubbles and sending up strands like the other picture posted, but it gets there.