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The API pH kit will measure to .2 resolution. Is the tetra test a strip? If so, I'd recommend getting the API FW Master kit so that you can test for ammonia, nitrite, and nitrate as well. The strips are often very unreliable.
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8G Peacock Gudgeon, 75G CA/SA cichlids, 120G Planted, 50G Mixed Reef ( Build). 125G Reef and 100G frag tank in process.
Save the reefs... Buy captive raised when possible!
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