good or bad algae?
 

anyone tell me these are good or bad algae? I have lots on my live rocks. if these are bad how can I get rid of them.

#2 looks like a type of bubble algae. Not sure about the others.
Try this site and see if you can id them.
http://www.saltcorner.com/sections/g.../algaepage.htm

Algae outbreaks are usually a sign of too much nutrients in the water. Is this a new tank?

Thanks tlo I will check the web and go from there.

The first pic looks like Caulacanthus ustulatus. Do a Google search to confirm. It's often easier to match the real thing to a pic, than to match a pic to a pic! :) If I'm right, then it's a nasty one to get rid of. Every little bit that breaks off will start more algae. So when you rip it off have a siphon hose there to catch all the little pieces. This is a good idea no matter what kind of algae you're ripping off.

Second pic is showing some fuzzy red turf algae on the left (different than the first pic), and there is two green algaes there, but they are both a type of Valonia sp bubble algae.

The third pic shows Caulacanthus ustulatus and red turf algae.

All algaes feed off excess nutrients. With this amount of algae growing in your tank you can be sure that you have plenty of excess nutrients. To learn how to get rid of these take a read through the link in my signature. :)

Thanks, Myka
Looks like I have a long fight with those algaes.

How old is the tank?

My tank is a little bit over 6 month old. It is about 30 gal nano tank include refgium and sump.

Are you growing chaeto in the fuge? In a new tank like that it will take some time to get the nutrients under control. Feed sparingly, and keep your fish stock low until you get it under control. What fish do you have in there now?

I have a hector's goby and banded pipefish. I checked my water last night and was ok.
PH 8.4 Ammonia,Nitrate & Nitrite are 0 KH 8dKH Caluciam 420 Phosphate 0.1

I have red macroalgae in the fuge. I'm thinking to send a pipefish back to local store and add 6 more turbo snails , 10 margarita snails, lawnmower blenny and/or bi-color blenny. Hopefuly, it works. any idea?