I have a new 2 acre tank that was built in March and filled up shortly thereafter. Tank holds water good and so I put forage fish in May. Water always had what I thought was a nice dark color to it and I could see to a depth of 1-1 1/2 feet at waters edge. But looked at it yesterday and it seemed to have somewhat of a khaki or sandy color. It's located in south central Texas and temps are getting warmer but not unusally hot yet and we continue to have nice rains. Grasses are to waters edge except in dam area. Never been fertilized or anything else. Do I have a problem? Any thoughts? I hadn't looked at tank in about a month so don't know how long been that way. Thanks for any opinions.