Cannatonic Early greenhouse grow

Started this new grow of Cannatonic by Resin seeds. Days here are still pretty short, so I will give the seedling some weeks of additional lighting until the days are long In my other grow, I noticed a delay in growth of my Royal Cheese seedling, probably due to watering with regular tap water (pH 8.7). This grow I will use pH'ed water. Soil mix: 5L coco 5L soil (plagron Promix unfertilized) 1L perlite I kept 1L soil mix aside to sprout in, and the remaining 10L is fertilised with Ecostyle (5 tbs) living organics fertilizer. As for my set-up, like my other diary, please don't mind the temp and humidity values too much, as they are moved in and out of the greenhouse due to cold nights. Also the temperature of the greenhouse depends on the sun and wind here, so don't mind them too much as well.. Typical temperatures on a good day are anywhere between 20-30 C.