Thanks for the replies, guys.
I cleaned the tank really good yesterday and it looks spectacular this morning. Even the algae among the substrate cleared up. I added some sand and shells from Siesta Key that I had in a big jar, and now my Sargeant major damsel is making a great big nest. He's fanning out the hole and carrying rocks away and dropping them at the rate of about 5 or ten trips a minute. Fun to watch.
Lance, I had thought the diatom filter might be adding to the phosphates. It doesn't jive though.
Mark, I have tons of phosphate sponge in my Fluval sump filter, or whatever it's called. I think it's a cannister filter. That initially helped.
With clean water and a clean light and clean glass tops, there's a lot more light. It may just be that my light was so low it caused the bloom. I'd been pretty lazy about taking care of cleaning, so I'm likely the cause.
I'll just keep after it for the next week and see if the algae blooms subside.
Thanks for the help!!!