In regard to the amount of nutrient solution needed, I use 5 gallons of total solution. The net pots will sit down in the solution at least an inch or two, maybe more depending on the depth of the pots you choose. It is recommended that you allow the water level to vary up and down by an inch or two so that the developing root system will get occasional exposure to air.

You can choose to use any nutrient solution you want. I chose an organic solution using the Botanicare products: Pure Blend Pro (Grow for veg, Bloom for Flower), along with Liquid Karma and Sweet. I use Dutch Master's Zone as a root conditioner to prevent root rot.

I'm short on time so I'll post more with pics a little later on today or tomorrow...