Well, if it's been sitting for 2 years with stagnant water, I'd say a good cleaning is the first priority!
The "dead" rock will become "live" again when you add more LR
. You should probably have 75-140 lbs in your tank, anyway, so that 45 pounds will just serve as base rock until it gets seeded from new stuff.
What other equipment do you have?
I think the bowfronts are really nice-looking tanks. We were going to go for one, but the stand issue stopped us.
tank with 29-gallon sump
2x Maxijet powerheads
Mag drive 9 return
Coralife 4x65 Lunar Aqualight
120 lbs rock from liverocks.com
1 peppermint shrimp and 1 fire shrimp (very shy)
2 black Ocellaris, Squish and Smudge
3 chromis, too identical to name as yet, in QT
29-gallon with two goldies, Carrot and Orangehead