Everyone says this everyone says that. Get ur ph to 6.5 and try keep it as best to that. Then you know if anything else happens to your plants its a toxicity or a dificiency in what your givin it. (in terms of ph lockout) Search on google for a ph lockout chart. And thats all you will need. The best way to grow a plant is simplicity. Forget all the bullshit everyone feeds you. Grow a plant first of all. And you will find your way. They are other problems of course eg overwatering light bleach heat stress bugs ect. But an prevention is the best remidy. Good luck on your road which ever way it leads you.
God bless AK