This is a myth that's been repeatedly debunked. Please see EI dosing for evidence.
There are several factors that play into algae problems. The three main factors being levels of lighting, amounts of CO2 in the water column and plant mass.
Fish and plants are very small and need very little food. Most water keepers feed too much, so they have algae problems. Closely monitor how much food goes into the tank, if you feed more than a little twice a week, then you're likely feeding too much.