Carbon will definitely help to Clear water but I don't believe it will help with algae management. Carbon is a chemical filter, it will soak up whatever contaminant or medicines is in there.As i just launched it with live rock that do -unfortunately- contain a bobbit worm, i prefered to run on carbon, for now, to not face a big algae invasion. Maybe it's useless, but at least water is clear.
Actually there's nothing much to see, it's only a scape for now, with some amphipods and asterinas if they don't get eaten by the bobbit
Algae is normal in the begin.. I had myself some issues too. A good clean up crew once they appear is the best thing in my opinion. You should see first some diatoms.
I'm curious about this Bobbitt worm. If you have fish in future, this may be trouble.