You can brag about your book and all but in today's world your way is just not practical. My tank has been ich free since 2019 when I began it. The only couple I keep are a pair of flamehawks. I have 11 tangs. I'll let you know how long my tank stays up.Now Squidward, it is your turn to show how a mature, healthy ich free tank is supposed to look like. Healthy means everything that can spawn, is spawning and dying of only old age.
If it actually is healthy and looks good, post pictures or start a thread of your practices.
Of course you can write a book as it doesn't cost anything because Amazon will publish it