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ID this algea - What to do?

Please ID these algea.
Latin names are OK but I really need to know the english name IE. what it's usually called on this list.

1. http://user.tninet.se/~nuz246a/images/id1.jpg
2. http://user.tninet.se/~nuz246a/images/java1.jpg
3. http://user.tninet.se/~nuz246a/images/java2.jpg
4. http://user.tninet.se/~nuz246a/images/riccia1.jpg
4. http://user.tninet.se/~nuz246a/images/riccia2.jpg
5. http://user.tninet.se/~nuz246a/images/sword.jpg
6. http://user.tninet.se/~nuz246a/images/thread.jpg

What could be the cause of this plant beeing in stasis (goes for the other Javaferns to)?

Chemical & Water values: http://user.tninet.se/~nuz246a/values.htm

How do I get rid of these algea?
Are my water values terribly wrong?

Upon returning from my vacation I found my tank overgrown with long threads of green algea.
After a 4 day blackout and severe pruning (IE. just kept the tops and replanted them) they soon returned.
Now I can't get rid of them :-(

Lighting is 8 * 36 W on 12 h
Tank is 540 L and I change 100 L / night.
population is
8 discus
12 cardina japonica (I think)
6 large yellow snails

really greateful for answers on or off list, on how to go about this.

/Greger - Still in T-shirt in warm and sunny Sweden