Here is what I do. I get my RO water in a bucket, put some air stones in and run the air pump. I add some calmag and stir it up. Next I add some silica, beneficials, micro nutes, and molasses, stirring after each addition. Then I add my grow big and stir and finally I add the big bloom. PH the soup, and record the PPM. I let it bubble for half an hour to get some o2 in the mix. I take that brew and pour it in the center of each plant and then circle the trunk to get the mixture to the surrounding roots, not flowing down the sides and out the bottom. I try to just get the medium wet and then I come back and add enough to get a little run off. You don't have to do it my way, but you could. Have fun.