I think the algae is brush or something like it but not sure. the oto's do a good job on the glass and stuff but they won't touch this stuff. I have finally found a good lfs in my area and they are trying to get some sae's in.
The algae in the picture does not appear to be hair or brush algae to me. Looks more like soft algae or 'glass' algae which is common to Sag. and often seen on Anubia and other broad leaf plants. I've got some Sag. now that have it on the leaves.