After testing my water with the supplied TDS meter which came with the zerowater, it came out 265ppm for my 16L tank, and which recently a bee shrimp gave birth to 6 babies at present, could be more, I have started to do a water change with zerowater without adding minerals in a few days intervals to reduce stress for the shrimps.
On the other hand, my turtle habitat has a TDS of over 800, I have reduce that to just over 500, and will change water bit by bit, but I was surprise that the wild neo shrimp which lives with the turtles has been alive for months, they was suppose to be food.
I've had problems upload photo using the drag and drop from this site, now I always upload to www.tinypic.com , I've used this for years.