Plants growing in my aquarium

[Chatzielein]

I have plants growing in my saltwater aquarium, should I remove some of them or leave them.
Also, are the dark green once actual plants or algae?

Here are some pictures

Thank you

 

[austinph]

Get a urchin and all of that will be gone in a few days. but that is nice plant growth.

 

[Jimbo7]

The dark green looks a lot like a hair algae I used to have. It ended up ravaging my frag tank to the point I had to take it down. I would remove it, but the lighter stuff looks like some decent macro algae that if you don't mind, you can leave.

 

[mr_X]

if you don't mind either, you can leave it. keep your water pristine and the algae will starve for nutrients.
i think the longer, darker stuff is briopsis. you can slowly raise magnesium levels(i used kent tech-m) to about 1700ppm to kill it off if it starts to get out of hand. i don't know what the smaller algae is. can you get a close pic of it?

 

[johnmaloney]

+1 to byropsis plumosa

caulerpa for the rest