I have a 400 watt hortilux light & theirs 4 nice ladies in there & there about 10 inches high now & real bushy.I'm growing the A.M.S strain & Genetics: Swiss sativa, Swiss indica.I have them in 5 gallon buckets now,but i wished i hadn't put them in that big of bucket,but when i 1st started them i figured i'd go large so they wouldn't get root bound lol & i have atleast 6 foot height which to let them stretch up to the light.