I have used kc since 1998 and have had good results, most of his stuff is for real large outdoor plants. I used kc33 and 36 in my own strain crosses for specific characteristics. I did mango about 5 years back and it went well. Let us know how yours goes as I was thinking of trying some new things i saw at attitude from kc. Maybe since i dealt with his product awile ago something has happened I did here he liked those crazy Brazilian girls and you know what that will do to ya. Good luck Peace