Nano Tanks Australia Aquarium Shop


*Please read all terms on cart page

Basic Freshwater Tank Hygiene for Soft water Species (and Shrimps)

As a normal process, the fish tank needs to have its water changed at some point but bear in mind that the water composition should remain at an acceptable level where it can be 50% of the old water and 50% of the new water to be added to the fish tank. This is essential to make sure that the fishes do not get shock in the process and get killed. The water clarity does not always indicate that the water is healthy, or otherwise, it can however indicate that the water inside has just been cleaned but it still needs to be tested for nitrate, nitrite, ammonia and the like to make sure it is safe. In order to keep the hygiene and safety altogether, here are the important water composition guidelines below:

pH levels

Normal pH range: 6.5 to 7.2

This is the acid/base (alkalinity) activity in the water

Rapid changes in pH levels are unhealthy for your fish or shrimps

Chlorine and Chloramine

What Is the Difference Between Chlorine and Chloramine?

Normal results: 0.0 mg/L

Chlorine and chloramine are found in city water and must be removed for fish.

The chlorine in tap water is toxic to fish. Use a dechlorinator such as Seachem Prime to dechlorinate any water before adding it to the aquarium.


How to Treat Ammonia Poisoning in Aquarium Fish

Normal results: 0 ppm

Once an aquarium has been cycled, it should have no ammonia. 

In new aquariums ammonia will initially be high due to the waste of fish or other tank inhabitants. These could be  neutralised by Seachem Stability.



Nitrite Spikes

Normal results: 0ppm

Nitrite reduces the oxygen in your fish’s blood. Nitrite is the second by product from Nitrifying bacteria in your aquarium. Where it is located in the high oxygen concentration of your tank. Nitrite is very quickly converted into Nitrate when there is an anoxic environment that exists.


Normal range: 0 to 30ppm

Nitrate is produced in Anoxic environments where bacteria converts Nitrite to Nitrates. Nitrates are a slow killer to fish and shrimps. Nitrates is essentially a fertiliser and it encourages algae growth, to keep the nitrate levels low a water change is required.

General Hardness

Normal range: 4-12dGH

Hardness refers to the levels of calcium and magnesium in the water. Test the hardness of your tap water and make changes to the aquarium water as needed.

TemperatureHow to keep your water temperature cool in hot weather

Normal range: 23 to 28°C

Sudden swings in temperature can harm fish. Use an aquarium heater to keep a consistent temperature.

Total Dissolved Solids

Total Dissolved Solids although not critical in an Fish Environment is critical in a Shrimp or Guppy Tank.

A normal range for Neocaridina Shrimps are under 300ppm

A normal range for Caridina Shrimps are between 120-180ppm

A normal range for Guppies are between 300-500ppm

instagram default popup image round
Follow Me
502k 100k 3 month ago
Scroll to Top