I'd say an easy 700 grams. That is my realistic number, but I don't see any way you are going to get over 2lbs. If anything I say you reach your goal of 900 grams which is right around 2lbs. When I veg under a MH or HPS I tend to pull about 650-800 grams per 1000w. Not the greatest but I am very pleased with pulling that and being 100% vegan organic.