Photosynthesis is a process used by plants to convert light energy captured from the sun into chemical energy. Basically, in photosynthesis, carbon dioxide and water are converted into glucose and oxygen.
If photosynthesis is decreased, due to low light conditions or water stress, then the production of sugars will decline and the fruit quality and size will all diminish significantly.
In short…. feed your plants lots of sunlight!!!
As a general rule, you want your vertical grow system in full sun. Minimum 4 hours p/day is sufficient to grow high quality yields. Because of the critical role of photosynthesis in plant growth, a one-percent decrease in light can translate to a one-percent decrease in yield.
Plants grown with inadequate levels of sunlight will be stunted and gangly. The leaves will be pale in colour and thin.
Plants grown in full sun will be lush, dark green with healthy dense foilage. Note: A fully grown system in full sun will easily soak up 20 litres of water p/day so you must top up the resevoir often.
Certain plants do like more or less sunlight. For a more detailed guide, see the ‘how to grow hydroponic’ tutorials.