Algae IDs (new tank)

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Hi everyone. I wanted to ask if someone could help me few algae IDs. My tank is 70g, four weeks young and obviously the algae is kinging in. My initial cycle completed two weeks ago and for one week my NH3, NO2 and NO3 are zero or unmeasurable (Salifert). PO4 is unmeasurable since more than three week (I run RowaPhos reactor since the start). I have 6 39W T5s and I have the lights on only few hours a day (though sometimes I leave them on longer).

Now to the pictures. The first one I guess is pretty clear: GHA in the circle and just to double check the thingies arrows point to are aiptasias?

http://radekzitek.cz/wp/wp-content/uploads/2014/02/20140216-212204-DSC_1329_-_2014-02-16_at_21-22-04_-_Version_2-3.jpg

Next one I am not sure what is it? It is red, much less dense than GHA, more "bristly" than hairy. And the picture is crappy, sorry about that.

http://radekzitek.cz/wp/wp-content/uploads/2014/02/20140216-211841-DSC_1324_-_2014-02-16_at_21-18-41_-_Version_2-4.jpg

The next one: Is this some baby caulerpa? And if yes should I worry about it in the display? BTW on this picture there is some more of the red bristle stuff from the previous picture.

http://radekzitek.cz/wp/wp-content/uploads/2014/02/20140216-211848-DSC_1325_-_2014-02-16_at_21-18-48_-_Version_2-2.jpg

Now the fourth one worries me a little. This thing spreads mainly onto this one dead rock and the overflow is (well was until this afternoon) quite full of it. Is this Byropsis? I have seen some pictures on the web and there was quite often a carpet of Byropsis. That is not what I have (so far), usually single piece. Even that overflow was still like four five "plants" per sq.in.

http://radekzitek.cz/wp/wp-content/uploads/2014/02/20140216-212247-DSC_1335_-_2014-02-16_at_21-22-47_-_Version_2.jpg

And then last one and a little mystery to me: Small and bright green "worm-like" things. One of them is there for like two weeks, does not grow much, but in last few days few others came up. No idea what are they.

http://radekzitek.cz/wp/wp-content/uploads/2014/02/20140216-211900-DSC_1326_-_2014-02-16_at_21-19-00_-_Version_2-2.jpg

Now I am not too bothered by all the algae (well except the suspected Bryopsis), I know tank this young will have to go through algae phase. Just would like to make sure if there is something "ugly" in the I try to catch it soon enough.

Thanks everyone for their help.