Thread: Why does it look like this?

Sediment, pollen, debris, even plankton and micro organisms can do that. I wouldn't get concerned unless it doesn't clear up on a new body of water. The first time I used my SI, I used it in the Muddy Mississippi and it looked just like that.. I contacted a friend and asked if something was wrong with my unit, he asked where I was and I said the river, he laughed and said "no, that's normal". I went to a clear water backwater slough where there wasn't any debris in the water and it was crystal clear.