Wow. Just... wow. Look, I've read Hoppy's thread about PAR. But this is amazing to me (which shows why I'm struggling and why I'm here). I had a tough time growing much in my 55g tank until I got up to a 130W coralife CF fixture and of course have been set on Watts per gallon ever since. And you're rocking this 55g tank with 48W of standard output T5 light?
I have much to learn!