My ammonia and nitrites are both now reading zero. Nitrates are around 30. First added live sand on March 8th. Then dry rock on march 17th. First added dr tim's ammonia on march 23rd. I am planning on using bio-spira also before adding my clownfish just to be safe. Should I still dose the ammonia back up to 2 to make sure it goes down within 24 hours? Or would that just add too many Nitrate?