I am looking at using H&G nutes for my second grow - moving up from miracle grow on my first grow. I see on the chart in the attached link the amounts of each nute my plants will need for each week. It's not on the chart but I saw another place where those amounts were for a gallon of water. My question is can I just use a small amount of water to dissolve the nutes - I mean my 4 or 5 plants will not need a gallon of water the first week. I know that is probably a dumb question but if you don't know you don't know. Explain please.