No Products in the Cart
Flexible interest-free payment options available at checkout.
From as little as R 60.00 per payment. Learn more
NTLabs -Broad Range Ph 6-9 Test is available for pre-order – please confirm stock before ordering!
Understanding pH in Your Aquarium
pH is a measure of how acidic or alkaline your aquarium water is. The Broad Range pH Test included in the NTLabs Aquarium Lab Multi-Test Kit is designed to accurately measure pH levels between 6.0 and 9.0, the most common range for freshwater aquariums. This updated test offers improved precision, allowing for 0.5 unit increments to help you better monitor and manage water conditions.
Ideal pH Levels
There is no single correct pH value for all aquariums. Different species of fish have varying pH preferences depending on their natural habitat. As a general guideline, most freshwater fish thrive in a pH range between 7.0 and 8.0. However, some species may require slightly more acidic or alkaline water. When buying new fish, always ask your local aquatic retailer about the preferred water conditions for each species.
Managing Incorrect pH Levels
If your aquarium's pH is outside the desired range, any adjustments should be made gradually to avoid stressing or harming your fish. Never change the pH by more than 0.5 units within a 48-hour period.
If your tap water is within the correct pH range, performing large partial water changes can help safely correct pH issues
Check the KH (carbonate hardness) of your water, as low KH can lead to unstable pH
Use pH adjusters like KH Up – pH Stabiliser to raise pH in soft or aged water
To lower pH naturally for soft water species, use bogwood or other materials that gently acidify the water over time
Consistent testing and slow adjustments are key to maintaining a stable and healthy aquarium environment.
How to Perform a pH Test
Ensure the test tube is clean
Add 5 millilitres of aquarium water to the test tube
Add 5 drops of the pH reagent
Cap the test tube and shake thoroughly to mix
Compare the resulting colour to the provided colour scale to determine the pH level
Regular pH testing allows you to maintain ideal conditions for your fish, prevent stress, and avoid sudden changes that can lead to health problems. The NTLabs Aquarium Lab Multi-Test Kit makes accurate pH monitoring quick and easy.
