how many as in a "couple" two, three, more? it depends, and wut is the size, in feet deminsions, cuz a smal 3x3x4 with 2 plants is hella different than 5x4x6 with 4, and you get the idea....
llamaman666 Reviewed by llamaman666 on . lighting problem I HAVE A 150W HPS IS THIS STRONG ENOUGH FOR A COUPLE OF PLANTS IN A SMALL GROWROOM. Rating: 5