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Why Does Aquarium Temperature Matter?

Aquarium temperature is often the first thing many home aquarium owners will test for and is critical for maintaining healthy metabolic functions in fish.

8 Best Practices for Using Your Hanna Marine Checker

There are many things that can negatively impact results when testing your aquarium. Find out how to prevent bad readings with these best practices.

Digital Testing for Saltwater Aquariums from Hanna

The Hanna Instruments Marine Checker Handheld Colorimeters produce accurate digital readouts for your aquarium's alkalinity, calcium, nitrite & phosphorus.

How to Test for Alkalinity (dKH or ppm) in Your Aquarium

Proper alkalinity is vital for coral calcification & skeletal formation; prevents pH swings, coral bleaching, & tissue loss; and improves equipment performance.

How to Test Calcium in Your Aquarium

Calcium should be checked weekly at minimum, and every time you add or remove any organisms from your tank.

How to Test for Phosphorus (Phosphate) in Your Aquarium

It's important to measure phosphates in a reef tank because if the levels get too high, it can prevent coral calcification or cause excessive algae growth.

How to Test for Nitrite in Your Aquarium

It's important to test for nitrite when an aquarium is first being set up and when the tank is being cycled to make sure waste is being properly recycled.

Top 10 Mistakes in pH Measurement

Proper technique in pH measurement is not always put into practice. Learn about the top 10 pH mistakes our experts see, and find out what to do instead!

Phosphorus in Saltwater Reef Aquariums

While phosphorus is vital for growth in plants and animals, it can be problematic for aquaria inhabitants, particularly coral.

Should You Be Teaching Marine Science?

Education raises awareness of the relationship humans have with marine environments, and is one of the most important factors in conservation efforts.

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