Leonardo De Garden
Well-Known Member
- Joined
- Aug 9, 2012
- Messages
- 76
- Reaction score
- 5
To calculate is Grams Per Day (GPD). Subtract the planting date from the start date to find the total number of days grown. Then take the weight of harvest, and divide by the number of days grown, to find out how much was produced each day. Calculating the GPD for each harvest will allow a comparison of the success of different grows even if the number of days for each is different.