Thanks for all the info on the the phyto everyone. 
As to the caulerpa, I have a standard 18" flourescent running at either 5000 or 6500K(forgot which one). I guess I'll try the flood light that was suggested. Hopefully I'll have room. There isn't a lot of space above the fuge, probably 3 inches. If the flood light won't fit I might try a small compact flourescent. Do you guys think this will work? 
_________
55gal,216 watt Tek T5, 45#LR, 45#LS, 3 maxi-jet 900's on a natural wavemaker timer,phosban reactor, 5 gal fuge (built out of standard 10 gallon tank) with chaeto and feather caulerpa, sealife systems protein skimmer, wet/dry, 3 blue/green chromi, 1 skunk cleaner shrimp, 1 coral beauty,1 scopas tang, 2 false percs, 5 mexican turbo snails, assorted dwarf blue leg hermits, astrea snails, and nerite snails |