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Fluval pH Test Kit Reagent Refill (4.5 - 9.0) - 10 ML

$3.26
$3.26
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Description

Fluval pH Test Kit Reagent Refill (4.5 - 9.0) is a replacement pH test reagent for the Fluval pH wide range test kit, made for ongoing aquarium pH monitoring. This pH wide range test kit reagent refill keeps your aquarium water testing routine consistent without replacing the full kit.

This product is a dedicated reagent refill that’s compatible with the Fluval pH Wide Range Test Kit (item A7868). It’s the right match when your original pH reagent runs low and you want to keep the same wide range pH test format. The refill itself is listed as item A7816, which helps confirm you’re choosing the correct replacement reagent for the correct kit.

Fluval’s pH wide range test is designed to measure a broad pH range from 4.5 to 9.0, covering both acidic and alkaline conditions in one aquarium pH test. That wide range pH coverage is useful in setups where pH stability matters for aquatic inhabitants and overall water conditions. The pH wide range test is described for fresh and saltwater aquariums, making this reagent refill a practical choice for different tank styles that still rely on the same pH reagent format.

The refill supports a color-based, colorimetric method that produces distinct results across the test’s pH range, so you can compare your sample color to the kit’s color chart and track changes over time. Fluval identifies the indicators used in this pH test reagent as bromothymol blue, thymol blue, and methyl red, which react in water to create the visible color response used for readings. That clear, color-driven approach makes it easier to spot trends early and stay ahead of pH shifts that can stress sensitive aquatic environments.

Fluval pH Test Kit Reagent Refill (4.5 - 9.0) is a good fit for aquarium keepers who already use the Fluval pH Wide Range Test Kit and want the correct replacement reagent to keep fresh and saltwater aquarium pH testing simple, consistent, and reliable.

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