Nice glad to see a fellow reefer near by. Ill check into the WAMAS but I will be working during the Frag fest. I thought about checking the other spots when I was down in Richmond like Azalea but I didn't want to spend any more money so I refrained.Welcome!
I'm in Stafford and have been to the following:
Capitol Aquarium in Manassas
Reef eScape in Fairfax
Supreme Reefs in Fairfax
Centreville Aquarium in Centreville
Blue Ribbon Koi and Marine in Cathapine
Reefology in Midlothian
Azalea Aquariums in Richmond
Richmond Aquarium in Richmond
You already mentioned Tiki Coral and Nova Tropical
*edit* - There is also Pets plus in Stafford. I only go there for emergency dry goods, would not get livestock here.
I have also been to Tropical Lagoon and Congressional Aquariums in MD.
My main go-to's are Nova Tropical and Capitol Aquarium.
It would also be good for you to join WAMAS, Wash DC Area Marine Aquarist Society. I get many of my corals and used hardware from local reefers.
There is also RVA Fragfest coming up Feb 12th. (I'm not affiliated) You may not be set up but would be good to see some reginal vendors. More info on FB.