Now I wish I had some hair algae. Somehow my tank is remarkably stable and I only get some light green spot algae that needs to get cleaned off the glass every few weeks. It's really kind of amazing since it's only 7.5 gal, I use only tap water, and haven't changed water in months, only top offs.
I guess it's not that remarkable, I only have cherry shrimp, snails of multiple unknown species and origins, some Malaysian trumpet snails, a single oto, some H. difformis, java fern, and java moss. I also feed very sparingly, maybe once every 7 days and dose minimal ferts (N,P,K and micros) once every 3-4 weeks.
If I can lay off the smokes, maybe soon I can spend some money on the tank and upset the system a bit.