I'm new to this business and I just made a big investment & im trying to get all i can out of it . I was washing a house this week and a guy came and fertilized the lawn in about 15 min and all he had was a pump and tank. I'll like to hear what you all think about putting liquid fertilizer thur my system it would only go through my pressure hose not the tank or pump .It would pull in to the line and mix Im just thinking about how to make MONEY.