The new tank must have the same ph.
Fish tank of water.
Then test the water.
In a freshwater tank use a remineralizer like seachem equilibrium to restore the mineral balance.
This is especially true of water from tanks in pet stores where rapid turn over of fish can introduce a disease into the water with no opportunity for the store employees to detect the disease.
The filters need to be replaced periodically however.
Remember to let it stand for a minimum of 24 hours.
Look for the warning signs of nitrite poisoning in your fish tank such as poor appetite inactivity fish hanging out by the water filter outflow and brown colored gills.
If you do not know the history of the tank and what the water conditions really are in this tank this can pose a risk of disease or chemical toxicity to your fish.
The acid base balance of the water measured as ph is the most frequent cause of fish stress which can ultimately lead to fish loss.
Balancing your tank to the fish who live there is key to their health and safety.
It is usually the most overlooked parameter.
Set up and fill the aquarium with water.
This is also important if you are moving your fish.
Do not add fish.
3 even a change of 0 2 can result in stress or death if it occurs suddenly.
In a saltwater tank your salt mix adds the essential salts and elements to the water.
Fish cannot tolerate sudden changes in ph.
Immediate water changes and adding 1 3 teaspoons of sea salt to the aquarium water will help reduce the effects of nitrite toxicity.
Run the aquarium filter for at least 24 hours to ensure that all equipment is functioning properly and that the ideal temperature is reached.
That gives a true picture of the ph.