Thank you John for the nice compliment and the suggestion. I"m not against adding natives that aren't local, but I'm trying my best to keep this biotope with species native to the Potomac River drainage.
I just added a central stoneroller last week, and it's eating a good amount of the algae. I think this fish has made a difference in just a week. I pruned the long stuff, and it took care of the rest. I've seen it grazing algae off of the Valisneria. I assume it is feeding on it off of the roots too. I know he's eating a lot of it, because he poos are long and green LOL. I tried to collect this fish for over 6 months now, and I finally got one. They are pretty common, so that was frustrating. I actually thought it was a small creek chub when I caught it, and didn't ID it until after it was in QT.
I'm due for a water change as the water has that yellow look to it now. I'm not using carbon at the moment, but may add that back as well to improve the water clarity.
I also added over 40 snails from our local creek, and there are zero left. The darters hunted them down and ate them. The gravel is littered with empty snail shells now!