I used the same one. I had no problem with burn. If you look at the scoop i used 1/4 teaspoon in 1 gallon. Seemed great no burn i guess good results. I'm sure I could have added more to the water but I didnt want to chance it. 2 thumbs up from me hope it does good for you aswell. I nuted about 5 waterings in a row. plant needed water nearly every 3-4 days. then i stoped for about 2-3 watering just used water. then I gave it more nute and now im flushing due to harvest coming soon. GOOD LUCK hope this helped.
Every plant might be diffrent so if you see sign on some burn lower the dosage. be smart she will tell what she needs and will let you know if the nutes are to much for her.
wutter