I rescaped and replanted my tank with brand new plants two weeks ago. Three days after I rescaped, I started dosing seachem Excel everyday, 30 ml of NPK everyother day (6 tsp of Postasium Nitrate, 2 tsp of Postassium Phosphate in 500 ml of water) and Seachem Flourish every Tuesday and Thrusday. Last week I started to notice some long, stringy, brown algae growing on a few of the plants. I did a 40 % water change and dose Excel. I have also added four oto catfish. The tank has 2 T-5 HO (39watts each) and 1 T-8 SO (30 watts) for light. Should I continue to dose NPK but in a lower dosage or stop for a week or two?