If you got the dough, consider upgrading to higher light. I started off with 2x13W PC for my 10G as well, but after changing to 2x27W PC, I can see significant growth increase for my plants especially glosso. With increased light, you will have to increase the CO2 to 30ppm as well.
To get to 30ppm of CO2 with your KH of 9, you will have to keep adding CO2 until pH drop to 6.9.
You might also want to get some true SAE to control hair algae before they got out of hands.