Algae Help

[tennis4you]

Now and then I get this hair algae looking stuff on the tips of my plants. I am no where near as high tech as some of you. I am running a 125 gallon tank with no CO2 and just adding Flourish. I am dosing the recommended (Whatever that means right?) amount of Flourish. I have (3) 50 watt T-5 lights. Not sure what my best bet to keep it down to a minimum is. Image of one of the plants below. The tank is moderately plants.

 

[aaronnorth]

150w of T5's on a 125g is a decent amount of light. take a look in my sig at the alga guide. BBA is usually a sign of low/ fluctuating CO2 and/ or not enough nutrients.