is the calcium, magnesium, and other essential minerals found in an aquarium. The bottom line unlike many other aquarium parameters, is to not worry too much about specific pH, rather maintain a stable pH! Some general hardness (GH) is what is most important and by some I would recommend generally at least 150 ppm. This is a question that really deserves a long answer for best understanding, but I will make it as short and simple as possible. It means that if you have tubes and pipes (plumbing) coming out of your tank to carry water to filters or other equipment, you may need some place for water to collect. The pH will change as new fish are added or removed, as water is added or changed, and as the biological processes change in the tank.
In summary, the term too high GH has been proven in most instances to be a myth and more importantly depriving your fish of essential mineral Cations can lower fish disease resistance and make treatment of sick fish more difficult due to oxidative stress! This said, test for pH is important before and after water changes, this includes the new water to be added after a water change so as to prevent pH shock by adding water to an aquarium that could change the aquarium pH more than.5 either. More importantly bio-chemistry science proves this is not healthy for ANY fish (including Discus). In some cases, however, there may not normally be water getting into the sump. By setting the protein skimmer up in the sump rather than out on its solden ski pass own, the sump then can act as a back-up in case you forget to check the catch as often as you need. Tests into aquarium Redox has shown that the use of a dissolving mineral block such as the AAP Wonder Shell best maintains these positive mineral ions Cations as well as lowering oxidative stress in fish. How Often Should I Check pH? gH ; is general hardness by the common long standing definition.
If the tank is treated with medication, the pH should be checked when treatment is begun, on the final day of treatment, and again a week later. If left unattended eventually they too will be affected by low oxygen levels.