Oi, that would explain it.
pH is fine, then, for a lights-out environment, just drop that salinity a little and all should be well, but at this point, if your lights have been off a week or more, you should theoretically be algae-free. You probably ought to go ahead and start turning the lights on, if only for the beneficial organisms of various kinds that rely on photosynthesis, such as zooplankton, and other critters that were living in your live-rock and live sand, many of which really need light for various reasons.
I'd go ahead and get a pack of janitors somewhere. Fishy Business is the only place I know of locally to get them in anything like quantity, much less at a good price too. Otherwise, if you want to buy online, I recommend one of http://garf.org/">G.A.R.F.'s</a> janitor packs. They're more expensive than you can get many other places online, but they're guaranteed to be of the finest quality and a good mixture of the proper animals for your size tank.
Wherever you get your janitors from, I'd highly recommend getting a couple of pounds of [IMG]http://garf.org/algae2/janitor.html#grunge">GARF Grunge Plus</a>; it'll really get a solid biological process started in your tank before you add anything besides basic invertebrates.
Taking it slow with your tank is rarely a bad thing; get some Grunge and a good janitor pack from somewhere, get those lights on at least 6 hours a day, and your tank should be rockin' in just a few weeks.