now that we live in a place where it's fall/spring all year long we only need one. 2 sets can be safely connected with the male to female connections. in this case, the crops need abundant watering. a big green salad is good on the side either way. you haven't given us any idea how much you have learned about this topic. this is what people will do to one another. there is an old saying in wound care that if the wound is wet dry it out and if its dry wet it. 