Tnx for the help im not sure what leds to get yet but if you can suggest any that will go with mh hps combo it will be great for me after a reserch i was told to get the ones that have green in them and that they are the top leds .im gana use all the light together combined starting with mh and so on step by step ending with all working together .and the room is 5×2 ty mate dont feel confy barging into mono page sry monoMono uses HPS. If you going a bit bigger and not just personal use I would go with HPS. Is the room 5m x 2m? Which LED's were you looking at bru?