just an example...a gram of sugar will have less volume than a gram of flour. Flour is more dense per volume. Which weighs more ...A ton of bricks or a ton of feathers?...now which will take up more space in its natural form?... Megacrop is not evenly granulated like Miracle Grow. I see where you can get an even distribution with MG with their measuring scoop. However, Megacrop consist of fine grains and round bits, Also if moisture gets to Megacrop. It will clump, throwing of any type of ML/per measurement. but the clumping does not effect the strength. because it is formulated for measurement by weight per gallon. I simple gram scale will relieve all your headaches with the g/per this or that, and now you have a scale.