I found that my inverts, no matter how many I had, didn't help. I did my water changes and kept a tight control over my nutrient levels. I finally asked at my LFS
and found that they suggested two products.
These two products worked like a charm. I put them in the back of my 12 gallon nano cube and in less than three days my algae problem was solved.
This is not a permanent fix, I know and I have added some more snails as well, but it sure kicked the problem in the butt and I am able to keep control of it now.
I hope that this helps.