Neptune Systems - Dissolved Oxygen Temp Probe - PM3 - 4756 - Controller Timer
                            
                            
                            
                            
                            
                            
                                          
                                        
                            
                            
                            
                                
                                
                            
                          
                                            Delivery
                                            Usually delivered in 2-4 days 
                                         
                                        
                                        
                                        
                                            Highlights
                                            
                                            
                                            Many marine aquarists only give the oxygen content in their aquarium water a passing thought, not fully understanding how the level of the Dissolved Oxygen (DO) in their tanks can affect their entire tank population.  In one way or another, everything (fish, invertebrates, corals, algaes, bacteria) in the oceans and in marine aquariums react with oxygen. Most of the living beings of this planet require oxygen in order to metabolize nutrients. Fish, invertebrates, corals, and bacteria ingest O2 and expel CO2 day and night.
                                         
                            
                            
                             
                                            
Description
                                            
                                            
                                          Many marine aquarists only give the oxygen content in their aquarium water a passing thought, not fully understanding how the level of the Dissolved Oxygen (DO) in their tanks can affect their entire tank population.
In one way or another, everything (fish, invertebrates, corals, algaes, bacteria) in the oceans and in marine aquariums react with oxygen. Most of the living beings of this planet require oxygen in order to metabolize nutrients. Fish, invertebrates, corals, and bacteria ingest O2 and expel CO2 day and night.
Your critters are not the only things that use oxygen in your tank. Organic materials (i.e. Dissolved Organic Compounds, uneaten food and fish detritus on the bottom of the tank) consume a lot of oxygen as they break down. And now it's even popular to add nitrifying bacteria additives which multiply very rapidly, consuming a large portion of the available oxygen in the tank water.