Don't even worry about the algae. It's good, in my book. It took 3 days to cook my very good live rock---I was very upset about it, [happened during move and setup delay] and I would take any amount of algae to have my worms and dusters and snails back. You could install it now, or continue to 'cook' it that way for a week. Ultimately it won't remove phosphate, which is why you have algae blooms: that will be done by phosban and refugium, when you get your tank set up.