I set up my 120 gallon planted tank a month ago. 2 days ago, I started to see a lot of algae and when I got home yesterday, the water was completely green. I have been dosing the recommended dose of excel everyday, potassium, iron, and flourish every three days. I have two fluval 3.0. They were set for a 2 hours of sunrise, 10 of intense light and 2 of sunset. Today I reduced 2 hours of the intense lighting. Please let me know how I could fix this.