What are your basic test levels (ammonia, nitrite, nitrate and pH)? If you don't have any ammonia or nitrite you can take out the shrimp, do water changes until your nitrates are low, and then start stocking your tank. If this is going to be a reef you'll want to test the dKH
and even calcium if you plan on having stony corals (even magnesium for a SPS
tank). What are your plans for the tank?