The term salinity has been used several times concerning the hatch in a pond. In my case I have high salinity(3500 ppm) which is helpful in some ways but detrimental concerning the spawn. I have an Extech meter which gives me salinity,TDS,and conductivity. I just get TDS(total dissolved salts),conductivity, and various elements on my water samples from A&M.So when you Pond Bosses say salinity you are referring to my Extech meter reading but on the A&M water sample which one is it or do I have to convert conductivity to salinity on this sample with some conversion ratio. As you can tell I am no scientist but I want to be able to compare the Extech meter with the lab samples. Also am I right in saying TDS(total dissolved salts) is of no use in evaluating my pond just salinity? Maybe you can refer me to a paper on the matter - Thanks