Six weeks later the vertical grow pots are doing fantastic. There is so much space this is saving and running on my 650 litre system does not increase the load on this system. This system is still running at 50% capacity in my opinion. I can easily add another few more vertical grow pots and two more regular grow beds. Periodically I have been adding a little seaweed extract which seems to take care of some of the micronutrient deficiency. Compost tea is the next addition which I will be trying soon.