A picture on the back of the aquarium helps the fish feel more secure because it makes the back of the tank feel solid like a stone wall.
Imagine if you didn't know what glass was and you lived in a glass house. You could feel something there but you can't get through it, but you can see through it. It would screw you up. The same thing happens to fish. They swim into the glass but can't understand what glass is.
----------------
Without an ammonia reading from the test kit the results are inconclusive.
You want 0 ammonia, 0 nitrite (NO2) and less than 20ppm nitrate (NO3).
You have less than 20ppm nitrate, which is good but you have some nitrite and that is bad. You might also have ammonia and any ammonia is really bad but you would have to test for ammonia to get an actual reading.
Imagine if you didn't know what glass was and you lived in a glass house. You could feel something there but you can't get through it, but you can see through it. It would screw you up. The same thing happens to fish. They swim into the glass but can't understand what glass is.
----------------
Without an ammonia reading from the test kit the results are inconclusive.
You want 0 ammonia, 0 nitrite (NO2) and less than 20ppm nitrate (NO3).
You have less than 20ppm nitrate, which is good but you have some nitrite and that is bad. You might also have ammonia and any ammonia is really bad but you would have to test for ammonia to get an actual reading.
Last edited: