Can anyone id this mess and tell me how to kill it?

Hey Mc, sorry about the shameless poke, just playin. :sorry:

Anyway, as far as the worms they will probably get eaten by your fish. I have read that some people get whole colonies of worms in their substrate but that's when they are feeding live food and several get away from hungry mouths. The only thing you do have to worry about is if you start to see signs of a parasite on your fish. There are anchor worms that will attach to your fish and you will see a rigid stick looking thing with two barbels on the end of it hanging from your fish. Just keep an eye out for that but it should be fine. You might want to do a google image search and see if you can identify the worm, in case your camera isn't good enough to get it(like mine).

As far as the algae I don't really see a big problem there. Are you talking about the greenish stuff that is in the grooves of the driftwood? If that's it then I wouldn't call that a problem, at least not right now. On the second pic I think I see a green string in the upper right hand corner of pic. Is this what you are talking about? Remember that as all natural environments there will always be a mixture of organisms in the tank. Unless you see that algae go crazy and start covering plants then it is a natural thing to have at least some in there, IMO. I don't think that very many people with a planted tank can say that they are absolutely algae free.

As far as the DW stuff it is a fungus and some otos will eat it. You can try scraping it off but I think that time is the best answer. Maybe shrimp will eat it, IDK.