You are holding a personal Canna Notebook. Designed to write down the basic parameters of your grow. Room temperature, relative humidity, amount of water and used nutrients, visual control and more. Keep this logbook in your room or tent and use it consistently or as much as possible. The data you collect in time can be used to tackle possible problems before they will happen, just by looking at your previous data and when things started to change.It is setup as a week per page journal, meaning you'll have a quick overview of that week's data.Start documenting your grow now