I've bought a box of blood and bone meal fert today as want a good all round organic fertilizer. I wanted to be able to mix it with water then administer it as a tea so it goes straight to the roots but noticed on the label it says "to be spread on over top of the soil and watered in." Cant remember exactly cause its not in front of me, but it says something like 70 grams per square metre. I just want to know if you can dissolve this stuff in water, and if so how much?? Gonna be using it on tomatoes mainly and other veg.