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 most 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.