Shows that water inside the water park is a dirt trail, usually because there is no water flow. Make low oxygen and chemicals from fertilizers and pesticides is very confused.
Shows that the water is often contaminated water inside the patch. Since water does not flow Low oxygen They also have both chemical fertilizers and pesticides is very mixed.
Show that the water inside the bed often is dirty. Since the no circulation, oxygen is low. And also the chemical fertilizers and pesticides are mixed in.