Ah. I've watched a lot of dry rock builds, both on forums and in person, builds done by people who can grow corals faster than I can grow weeds in the back yard. Based on all that observation, ( and this is still just my opinion so take it with a grain of salt) I've concluded that dry-rock tanks, despite the fact that logic would argue to the contrary, take forever to stabilize, as if they were cycling in slow motion. That doesn't mean they don't work, of course. However, when people like Sanjay Joshi and Mike Paletta have trouble ( trouble being defined as looking good for a month or two, then having constant algae/dino plagues of one sort or another for a year or more, a timeline I see play out again and again on the forums), it tells me that maybe the system trades the luxury of theoretically being pest-free ( you can still get every pest known to man after the fact, after all) with user-friendliness.
I vote for trying to find a well-cured and substantial piece of live rock, putting it in the sump/tank, keeping your parameters stable, and waiting. It may take till spring, maybe even summer, but it will all eventually go away, probably independent of anything you do other than the basics.