I've sprayed the riot cubes with oxyctocin . I've used bio bizz soil that gives me over two weeks of nutrient. I've used fish tank water that holds soluble matter, that takes time to break down on week three. Each watering is given a spoonful of Epsom salt. the electro charge and the salt together in water, increases EC "electrical conductivity" - in my own way I'm just bypassing the buying of nitrogen feed nutrients. Now it's time to flower. I will now need to use bought nutrients.