Stopped at the local mom and pop pet store (always so much better than the chains!!!) where I found a huge piece of Chaetomorpha algae that may survive the brackish water for $5.00. Ended up taking most of it back as it would've filled the tank! Another reason I returned it is because two brittlestars rode home in it, and they most definitely wouldn't have.
Got a new fluorescent for it as well. It's a 50/50, like you recommended, Jake. Comparing the old lighting in the photos (attached and in post #2) I'm trying to decide which color lighting I prefer. The shrimp were much brighter in color under the old light, though the tank itself seems brighter with the new light.
So... some fun if you all want to play along. Which lighting to you prefer before, in post #2, or that in this post?