- Have you tested your water?
- Yes
- If I did not test my water...
- ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.
- Do you do water changes?
- Yes
- If I do not change my water...
- ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.
I have a 3,000 gallon Indoor tropical fish pond stocked with large freshwater fish such as iridescent sharks, pacus, gars, an assortment of larger South American cichlids, large South American catfish, and various other types of large odd ball fish. This morning I went to my fish room and realized my pump had gone out causing a severe shortage of dissolved oxygen in my pond. Most of my fish were in obvious distress with the pump being out for what I estimate to be at least 10-11hours. My large mouth bass were laying on the bottom belly up barley breathing, my golden dorado was at the top of the water column spazzing out, my pacus had their mouths open at the surface trying to gasp air and basically every fish was heavily distressed besides the ones that can breathe air I.e. the id shark and gars. I Immediately preform a 70% water change and restarted the pump and added numerous aerators. Now fast forward a few hours they all seem fine like nothing ever happened. Even the ones that I thought for sure were going to die made it. However my question is are there any long term health affects of Temporary severe hypoxia? Like could it have caused brain damage to any of them or could it affect their growth rate, immune system, or metabolic system?
