Choco Bud - Mini Closet Grow w/ 50W Lamp

Welcome to my tiny closet grow. I wanted to try to grow a single small plan in my closet. The goal was to get the job done with a limited investment and under dire conditions; low air circulation, no cooling, limited space. I realize these are poor conditions to expect a decent harvest, but in this case, the journey of growing my own small supply is more important than getting a massive yield. In fact, prior to beginning, I expected a yield of 0.5 grams/watt. Anyway, as temperature could easily become a problem I had to use a small LED grow light, i.e. a grow light with low power consumption. I figured I could fit about 50W inside the 55x55cm closet without heat becoming a problem. This is why I chose the LEDTonic Z2, 50W LED grow light. I spoke to a few lamp brands before choosing the Z2 and LEDTonic was by far the most friendly and helpful company to work with. The Z2's specs also beat similarly priced Viparspectras and other Amazon grow lights. I used a 18l / 4.8 gal pot and coco coir. I used my own nutrient mix that consists of Yara's Kristalon and Calcinit and added Raw P and also Epsom salt during veg and early flower. Week 1 Germinated one Choco Bud seed in a 0.5l plastic container and (wetted) damp coco coir. I used a 5W LED bulb for the germination phase and aimed at around 75 PPFD for this week. A 5W LED bulb with a dome delivers 75 PPFD at around a 30 cm distance.