You can add another 400w light in, if you put one 400w and one 700w light in the tent, it might be a little powerful for the plants,
High Kriaze, IMO not always too much light will be better, it might cause problem as well. The more lights will be better, but the watt need to be in some range.I set up my other grow tent so they are side by side now all I need is another Marshydro grow light... wink wink I am looking at you Sara... lol I want to ask you guys and gals some questions I have two grow tents only one is being used right now it has a mars II 400w both the tents are 32x32x63 what I would like to know is if I put a mars II 700w will it be more powerful I know it would have better coverage but will the light intensity be stronger if it is stronger I would like to get the mars II 700w if not should I just get another mars II 400w I plan on getting the light around July after my first harvest
Hello db003, I would agree with the better coverage and although I'm no expert I would think that just due to the fact that there are more LED's and therefore more available light (including reflected light) that you probably would get a better penetration too. Hopefully someone with more knowledge of the lights can help you, but as a Photographer if I need more light I make sure I get it, and more light is good yeah?