The red one - light is for the bloom and fruit formation.
The most frequent question: How much, do I need LED´s for 1m ²/for 6 plants?? Answer: Here no general statement can be met. It depends above all on it the plant is as light intensive, which you would like to breed. With 3-4 lamps (504-675 LEDs) on 1m ² already very good results can be obtained. 6-8 lamps per m ² can improve the result - it is not called however that they are needed. There this technology is very new gives it still no really meaningful comparative studies. We used and were very content 5 lamps for 1m ² mini Orchideen and tomatoes with the result. If you are not safe, test 1 lamp on 0,4m ² and compare you the result with their past lamps, then you can buy in addition still. Consider: 10 Watts per Bulb! They can replace and have a NDL to 400 Watts by 20 lamps their cost of electricity still halved! In few months the investment has you again back.