Hello everyone I have been cycling the 75 gallon tank for 14 days, have 25lb purple live rock, 25lb regular live rock and 25lb of dry rock. Cycle seemed to be going good put 2 fresh cocktail shrimp in to rot and get ammonia. Ammonia raised started getting nitrites, nitrite rose and got nitrates normal right. Yesterday my readings were ammonia .25 nitrites .25 nitrates 10. Tonight they are ammonia.25 nitrites 0 nitrates 10. Dont know what happed anyone else had this happed I’m using apI saltwater test kit. There are some picture bellow of setup.