Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
It is a good way to get started with fertilizer.
Fish food tends to be low in K and Fe.
Leaf Zone is K and Fe. A very good supplement to fish food as a fertilizer.
Ultimately, you are paying for the shipping and handling of water.
If all you have is one small tank, maybe that is OK. But if you want to save money, buy the dry active ingredients and add your own water.