I dont know how much it weighs, but with a Super Silver Haze mother/Clone we have, with a 2 months ( 70 days ) Veg 24 hours a day from clone, .... in 5 Gallons Promix BX under 1000w Hortilux HPS, and then Transplanted flowered in 20 Gallons. 15 more gallons, as it was already in 5 gallons, and yes, I do fill the container with Medium as full as possible.
After 63-70 days flowering, the plant with grow 4x-5x its size, and the plant will be completely root bound in a 20 gallon container. If the medium is dry,,,,,,, I can lift the complete rootball and the 20 gallons of Promix BX out of the container in 1 piece.
We get 20oz-24oz from such a plant under 1000w Hortilux HPS. Also no topping, but the plants are bent over, and made to grow into a hedge. They are not allowed to grow vertically, and early on the side branching is also trained, and the plant will soon grow correctly from the secondaries on their own, though.