please help id

[goingpoor]

i cant find anything that looks like this and no one else ever knows...this stuff is very corse and dosent harm my coral at all my gsp have just grown over it and so has my zenia..so what it is micro or macro.i had a friend takes these pictures for me my camera just broke down the other day ; (..

plus the one above this stuff looks kinda cool but i also thought that of the green crap all over my tank know .

 

[socal57che]

Pic 1 looks like everyday chaetomorpha. Google chaetomorpha for info. Generally considered beneficial, many cultivate it to reduce nitrates. If you have a sump/refugium put it there and place a lamp above it.
Pic 2 looks like bryopsis. (nuisance) image #2 on this page - http://www.google.com/imgres?imgurl=...&ct=image&cd=1
Algaebase.org info on bryopsis... http://www.algaebase.org/browse/taxonomy/?id=8433
Pic 3 looks like my chaeto when it dies.
This is where I put my chaeto...