lol you're such a noob, lol J/K. Just click on the scale attached to the top right hand corner of my pst in the green bar and write a quick comment why you're giving me rep and click the button below. If you can't figure it out no worrie. As for your question I really don't know it depends on how heavy into the nutes you want to get. I got the pH tester where you fill the little tube and add drops for like 10$, and with that you can test the water, and put soil in there with plain pH water shake it, let it settle then test the water to find out your soil pH. O don't have a ppm meter, wish I did, but I use Advance Nutrients and they have a nutrient calculator on their site that tells you exactly what to mix of all the extras, including things like the 3 part nute system, big, bud, cal/mg, and carbo-load, It takes all the guess work out.