Ya but whose to say all the plants would yield n turn out the same????? I wouldn't go claimin .8 a watt or half a pound without the real weight in front of me... in reality u pulled 60 gs under the light could u of gotten more adding more plants sure , but to hit .8 per watt or a half lb is pure speculation untill u do it... we will find out after the next run n then if u hit the .8 mark say it n be proud...