My fish tank air pump broke and I think my fish aren't getting enought oxygen because of it. Should I buy a new one or can it be fixed?

pH values are the acidity of a body of water. Neutral water has a value of 7.0 meaning that it has equal amounts of hydrogen ions and hydroxide ions. When more hydrogen ions are added the water then the number goes down and the water becomes more acidic, or if the amount of hydroxide ions goes up then the water becomes more alkaline.

pH levels in your fish tank can prove to be fatal if they aren't monitored properly. While there is no secret formula for the perfect pH level for all fish it is best to keep all the fish from the same bodies of water together. Salt water fish shouldn't be put in a tank with freshwater fish because they need different pH levels.

Throughout the day the pH level of your fish tank will change although these slight changes shouldn't be too harmful on your fish sudden changes will prove to be fatal. When you are moving fish from one tank to another you want to make sure that the two waters have the same pH levels. When you want to buy a new fish check the pH level of your fish tank and then the pH level of the water at the pet shop to make sure that the levels are not too different.

You should be checking the pH levels of your fish tank at least once a month, but more often is always better. When you take the pH level you should write it down in a log book. You should try to take the pH level at the same time every time you take a reading because at different times of the day the levels would be different. Try to keep yourself from going crazy, if the pH level is a few decimals off of perfect your fish will be okay. If the level is fairly regular you shouldn't have to do anything unless your fish show signs of distress.