Our aquatic friends rely on us to keep their homes clean. But even if your aquarium tank looks clean, your fish might be in trouble. Most freshwater fish need a tank with a pH level between 6.8-7.6 to ...
We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Tim Heffernan Tim Heffernan is a writer who covers air and water quality and ...
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