Hi! I have a 360 L tank lit by 11 x 25 w PL lamp (275 w). They stay lit by 7 hours a day. I've put the plants 4 months ago but there are na algae infestation! I dose EI regularly and CO2 controlled by ph computer. I've increased the water flowing some weeks ago. There was only two canisters (700 L/h each) working. Now I've put a 1200 L/h powerhead and I plan add more 2 (will be 5000 L/h total) and spread the water flow by a large spraybar at all lenght. My aquarium has 2 meters length. The illumination are too high? Which I need to do? Thank you.