What corals can I keep with this light

[stumpdog]

I was just wondering what corals I can keep with 220 watts of PC lighting over a 55 gallon. I don't have a canopy yet so upgrading the lights is not an option yet. Any advice would be appreciated. Also I know the watts per gallon thumb of rule has faults, but does this go off of the size of the tank or the actual amount of water? Does it matter? For instance with my DSB and live rock I have roughly 40 gallons of actual water, does that change the rule of thumb? Just wondering.
Thanks-
Jeremy

 

[hondo]

I've got 220w of PC over my 50 and I keep the following:
Hammer
weslo Brain
Candy Cane
GSP
Sarco Leather
Toadstool Leathers
Finger Leather
Various Shrooms
Polyps
Zoo's
All do fine with this amount of PC lighting and by that I mena they grow and show great color.
You could keep a few species of SPS but they will probably just exist and not really grow or color up much.
I also kept a crocea clam in this tank for over two years and it grew and maintained it's color although I kept it high up in the rocks as I don't really recomend keeping a clam with PC's (I bought it before I knew any better). Once I switched to MH in my other tank I moved the clam to the MH tank. A Squamossa clam would probably be OK with this light though.