We were filling up our pool (just a small one) with our well water. After a period the water became very brown. I went into the house to check if the water coming into the house was the same. It looked to be brown a bit but then the water stopped coming. I turned the taps off everywhere and waited a couple of minutes. I turned the inside taps on and water started flowing. It is still brown though! We usually get a bit of color after the spring and during really rainy weather. This brown that was in th pool was so dark you could not see through it at all. Any ideas?