rhodes68answered grow question 4 years ago Start looking at diaries beginning with the harvests to see results before looking at methods.
Saves time
Once you find a few growers doing so as you plan, soil coco deep water etc, and follow them closely.
Read a book on growing canna as you plan to do, a high reputation for the author and book is just a requirement.
Use this site, lot of info here but read a good book is my prime directive 😉