Questions about Algae

[dmkahlan]

I've my tank up for 5 weeks now. I've had a small outbreak of hair algae, which is now under control thanks to all the critters I have in my tank. But now I have another small issue - Green aglae growing on my live rock and some on the sand (but not much). My phosphates are <.3 and my nitrates are almost 0. I will be doing a 20% water change tomorrow (Saturday).

Does anyone have any ideas?

Here are some pics.

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[xyzpdq0121]

How new is your tank?!? Looks like natural algae to me... Not much you can do to correct it IMHO. Keep your perams in check like you are. You are going to get this type of algae "color" on your rocks.