The tank is not ready for population by acquisitions while there are any nitrites in the water column.
Cloudy water is usually an indication of some untoward responses in the water column, and can be the result of several causes; bacterial bloom, suspended materials from vacuuming or siphoning the rock, manipulations of calcareous sand bed materials, early indication of a phytoplankton bloom, microbubbles from the skimmer, a leak in the intake plumbing for the sump return or low water in the sump, auto top off pump when reservoir is low, extremely high pH, or exceeding the supersaturation point of the water column in reference to Ca and alk concentrations. In your Water Column Parameters (WCP's), you did not mention how long your photoperiod is, what your pH range is during the day (a single value is of little value, your tank changes during the day, we need to know the value and a time for lights on, mid morning, mid afternoon, and lights off), what type of lighting and intensity, values for calcium and alkalinity, your feeding protocol at this point if any, your calcium and alk replacement protocol and methodology if any, and the setup for your
biological filtration.
To adequately address such a broad range of potential causes for cloudy water, we'll need this info, plus maybe a few other questions answered to give you a good answer. Otherwise, we'll all be speculating at a few potential causes that
MIGHT be the potential answers to your question.
Waiting with "baited" breath for your response
