Yeah dude....go Flora 3-part and use hardwater micro. Don't worry about organics right away. Keep it simple since it's your first time. Get a good pH tester though. It's a must have. I didn't like the eye dropper style at all. If you can afford it, checkout digital pH meters. I got mine for like $90. American Marine pH monitor. It's a constant read so the probe remains in the reservoir. It's total peace of mind for me. pH is VERY important for lots of things like the health of your plant, the health of your reservoir and it's nutriients, and how fast and healthy your plants grow and finish. Those test strips and droplet tests are very inacurate I think.