Hello! This one is for Claus Christensen: Yesterday I saw some Tropica plant fertilizer sold in a small aquarium store here in Munich. I didn't know that you were also selling your own fertilizer. Here's the big question: is it the same fertilizer you are using (for the submerse cultures) in your greenhouses in Denmark? I know you probably won't be able to tell us the constitution of the fluid, but maybe some features? Michael