TDS should be below 150 ppm for shrimp and I prefer my level to be closer to 100 ppm (I don't have shrimp) after a water change with RO water. My harlequin rasboras are an electric reddish-orange with vivid black triangles, the angel fish are growing like weeds and all fish are healthy. My plants do not have any growth or nutrient issues other than some algae that is slowing diminishing.
I just purchased a few more fish from the LFS and their TDS was 310 ppm. It took me 2.5 hours to acclimate the fish.