Because sometimes the flowers you buy back. At first, I used the previous nutrient solution. Later, when the water was changed, it was difficult to master the ingredients. Causing all the flowers to wither.
Generally speaking, this product is still very popular with people. I think there is still a lot of room for development in the market prospect. You should study how to improve this product and so on. Let people trust this product more. Can bring more fun to life.