How long has it been setup? It would definitly help if you had some LR in there...I have about 60-65# in my 55gal...It took about 3mths to get the "good" algae...I had several outbreaks of the nasty green algae because my lights stayed on for too long...hope that helps..
Jake
Not quite sure what kind of algae you are talking about here.
With nothing in the tank but tufu & lava rock, and bagged "live" sand - there will be little if any chance for coralline.
You may get some diatoms or bluegreen cynobacteria - but if you "want" algae - it has to come from somewhere.
What type of algae are you waiting for ?