how big is your grow space as this will dictate the amount of plants more than the light,you need to the most light in the space you are useing but still be able to control temps and conditions.if i knew the size of your room i might be able to help a bit more.:thumbsup:
mattmao Reviewed by mattmao on . how many plants for 400W's? How many plants can I grow at once with like 4 clf's adding to 400W? I hope for 2-5? Rating: 5