I quit using expensive additives a long time ago. The only way to reap the benefits of spending all the extra money...
Is: A rigidly controlled laboratory grow. This means the exact temps, humidity, co2, +, all the other "bells and whistles".
(Clean enough to eat off floor, Michael Jackson would sleep there) kind of control!

If you are just a normal home grower, and want to achieve excellent results.
Learn to grow well, have a benchmark grow recipe that you can count on; Before adding a bunch of other stuff.
When I did this back in the day...The 1st grow following, and all sequential grows were more potent...healthier, and allowed the op to run on autopilot.

You will find that after you succeed in becoming a successful grower, and want to step up to the next level, that it gets a little tedious to be committed to a chore that you cannot "blow off".
Finding and maintaining a simpler recipe and a consistent mix that consistently maintains proper ph is the key.

So. Learn to grow...good KISS recipe..."3-part, Calmag+, Liquid Karma" or Superthrive"...
I have found, that when used in conjunction with Reverse Osmosis water...You always get a balanced ph of 5.7-6.0.

A rule of thumb is start with a 250- 400 watt lamp and grow 2-3 plants. the smaller set-up and ensuing grow will flourish, give you a benchmark, but without environmental problems one has to face when using 1000watts or UP!

Once you master this smaller set-up, and want to start enhancing your op...You may add *ventilation systems, and bigger lights, co2...etc.

*Once you have taken that next step; Put $$$ in good ventilation equipment.
If it is too hot and humid, then you will have too much foliage (useless lower and intermediate growth),
and not enough buddage (yield) after spending all that money and time, growing your little marijuana tree.


Hope this helps. Peace