Alright guys below is where my water is now, what do I need to do with it? I assume that I need to add some lime but I have no idea how much. What else if anything, do I need to do now?

The pond is located in North West Louisiana, was just built this past summer and is about 18" from being full. It is about 4 acres, around 6' deep on average and the deepest part of the pond is about 15' deep, right at the dam.

Also something that was very interesting to the guy that did the testing(he is with a local water treatment company) was that my water looks very muddy, but my dissolved solids is extremely low.

Thanks for your help,

TDS 50ppm
PH 6.0
Hardness .5 grains
Alkalinity over 20 ppm
Iron 5ppm