Testing your aquarium’s water parameters regularly is an important part of keeping and maintaining a healthy environment for your fish and invertebrates. Fritz Wide-Range Test kit is a liquid-reagent-based test that accurately measures pH in both saltwater and freshwater aquariums. The kit contains the required reagents for up to 180 tests, a test tube and instruction card with test color chart.
Regularly testing the pH of your aquarium water and making proper adjustments is crucial to keep your fish, plants, and other aquatic life healthy and stress-free. pH is a measure of the water’s acidity or basicity, and it ranges from 0 to 14. Acidic water measures between 0 and 7, while basic, or alkaline, water measures between 7 and 14.
Knowing the preferred pH range of each species in your aquarium is important since it can vary. Generally, a pH range of 6.5 to 7.5 is suitable for most freshwater fish, while marine or saltwater aquariums typically have a pH range of 7.8 to 8.3.
A consistent pH is preferable to frequent fluctuations. pH is influenced by many factors in the aquarium, including KH content, respiration, organic waste decomposition, and the nitrogen cycle. Therefore, frequent testing is recommended. Established systems should be tested at least weekly, while new systems or aquariums with fish illness or death should be monitored more often. Establishing a baseline pH of your aquarium as part of your regular maintenance routine will help alert you to problems early on. Any unexpected pH change can indicate water quality issues and should be addressed immediately.
To remove childproof safety cap, push down while turning.
Add 3 drops of pH reagent, holding dropper bottle upside down in a completely vertical position to ensure uniformity of drops added to the water sample.
Cap the test tube and gently shake several times to mix solution. Attention! Always use the cap. Avoid skin contact as this may affect the test results.
Immediately read the test results by matching the color of the solution against those on the pH Test Color Chart. Be aware that freshwater and saltwater results are different.
Rinse the test tube with clean water after each use.

DO NOT allow test solutions to get into aquarium. Read and follow all precautions on the product label.
Most community freshwater fish and plants do best between 6.8 and 7.4, and saltwater species tend to be in a range between 8.1 and 8.3. Even though different species have different preferences, most fish can survive across a fairly wide range.
Consistency matters more than perfection: a stable pH — even if slightly outside the ideal range — is less stressful to fish than frequent swings up and down.
| Item # | Case QTY | UPC |
|---|---|---|
| 75004000 | 12 | 080531040003 |