Hi, we have recently bought a rustic finca in the area. we had water delivered to fill the balsa, after a week or so the water  turned green despite it being covered. tot llatge advised us to use chlorine which they said should clear it up. despite using more than they advised the water is getting worse. we also have very tiny black things moving about in it that you can see in a glass of water. we only use the water for washing up and showering. does anyone have suggestions on what the things can be and what we can do to clear the water? thanks