this is my first grow i just hit the 3rd week in flowering. ive been using one 600watt hps and one 90watt ufo led for the whole grow. my temps are around 70-80 during the day and lil less at night. im also using some nuts that i got from my hydro store (davids grow). any suggestions? any idea how much i will yield?? is there anything i can use to help my yield without paying crazy money?