You can feel free to say it in my thread, but here is fine lol. First, you need to learn what each fert does to tell what your tank needs. So potassium is the driving force, plants are growing very small amounts or barely increase it, see what happens. It is really trial and error. You can find information on what each one helps with online. Then if you notice those symptoms you know what you should increase. It is more about knowledge. Learning more will help out. Also the plant information on here is pretty limited, if you want to learn some more I can give you another forum that is more for plants, so you should stay around here too. I learned much faster, and much more on there than here just because people on here can be newer to plants, there are only some that have had plants for a while and know a huge amount, I am not even close, it will take a long time with the amount of resources (money) to grow many other plants.