Ive used the whole canna lineup. There is not many additives. And i dont see much of a difference with ot without them. The Canna Coco base is damn good though. At 2 tsp (10ml) of each part per gallon gets it done for me. From mid veg all through flower. You can bump it to 12 ml per but its not necessary. Canna coco nutrient and Canna brick coco coir....all you need. I mist admit...Rhizotonic is very good for early roots but there are cheaper alternatives that work just as good. A good quality silicate like Europonic or Dynagro brand (or make your own with k silicate salts like Agsil) and some pH down...you can grow just about anything.