Green Alagea Help

[REEFVETTE]

This mornin the glass was covered in a type of alagea that comes off very easily... I didnt have to scrap at it just wisk my hand by it and it brushed away kinda like a powder... Can anyone help me identify. It seems to be formin on the front of the glass where the hangover filter empties. The hangover filter has a sponge in it, activated carbon, and some bioballs that came with the filter. Can anyone give me some help on this

[scubadude]

Hey Reefvette

Its really hard to say from your description, however from what you said you could be building up nutrients in your overflow sponge and/or the bioballs....is the sponge loaded with algae and other muck? If so then I would take it out and either clean it real good or ditch it.