true......If you are new to gardening,then you will have one big shock in store.big yeilds like the one in question might be got out dorrs in certain countrys.But indoor growing it has took me 3 year of learning to get a max of 15 oz min of 10 per plant,but there will always bee a few stragglers that produce less.I use 2 x 600 hps x 4 plants each plant has 1 mtr squared well just over,i get about 40/46 oz bone dry.