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Aqua Test Set pH-GH-KH - Velda
![API KH Test Kit [Fresh or Saltwater Use] | Mail Order Pet Supplies, Inc.](https://www.aquariumsupplies.ca/shop/skus/AP/API-KH-Test-Kit.jpg "API KH Test Kit [Fresh or Saltwater Use] | Mail Order Pet Supplies, Inc.")
API KH Test Kit [Fresh or Saltwater Use] | Mail Order Pet Supplies, Inc.
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So I can't get a pH testing kit but I do have a gH and kH test kit... what's the difference? Is there a way of roughly determining the pH based off
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