Reefara › Water Parameters
Target 380–420 ppm. Learn how potassium drives SPS color and polyp extension, how it gets depleted, and how to test and dose it correctly.
This buyer's guide ranks the best products in its category for a specific use case (tank size, experience level, budget). We test or reference real-world performance data, and we explain why the top pick wins and what scenarios push you toward an alternative. Every guide also lists a budget pick, a mid-range pick, and a premium pick.
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