Amnesia - Gea Seeds - Coco

This week growth has been a little slow which I attribute to the cold weather so keeping the tent warm enough is a struggle. I did a second feed using 2ml/l of canna A + B and then after a couple of days increased the nutes to 3ml/l with a PPM of 722. A few days later one of the plants is showing a few signs on nute burn so I dialled then nutes back on the next watering to just 1.5ml/l but I will slowly start to increase this on the next few waterings. Other than that no major changes, seem to be growing nicely albeit a bit slowly