The possibility that you've made the same mistakes before, are apparently pretty high. Would strongly recommend you look through your last years grow log, where we walked you through your problems, step by step.
Pick one method of growing, and stick with it till you no longer need assistance. If you can't decide on which method to use, go with soil, and get the proper meters to better monitor your grow. IMHO, it's the easiest and most forgiving method for beginners.

Like Charles Emerson Winchester III (one of the surgeons on M.A.S.H) said..."I do one thing, I do it well, then I move on..." This is a very sound policy.
Perhaps a little diary of what you do, when you do it, and how much you do, would help. It would make it easier to see a pattern of "cause and effect".
Perhaps a steady nute/watering schedule, and not just treating what 'might' be the problem.
Perhaps writing down the problem, and then writing down the answers you get? You can start your own "troubleshooting guide", specifically designed for you.

You'll have to pull it together, Hydro. If what you are doing is not working, please...try something else. This is a learning process, and you are going to have to focus. (or get held back a grade) :stoned: