Yes I will trade the mono once he gets bigger, as I said, he is still a juvenile and is small. Also, for the salt, I mixed it in a bucket with my tank water and then put it in; I did not put it in direct without premixing it. Also, for the hydrometer, I have one. I was saying that my hydrometer makes sense with the reading of 1.023 because I added about 4 big tablespoons of salt in tank water and mixed it and threw it in; before adding those 4 tablespoons, the refractometer said 1.021 so I know that I am at 1.023.