Lab-grade water testing in a $50 pocket meter.
Reef chemistry is the difference between a tank that thrives and a tank that just survives, and you can't manage what you don't measure. The Hanna Checkers — Alkalinity, Phosphate ULR, and Nitrate — are the three readings that decide LPS health, and Hanna's accuracy at this price point is genuinely lab-grade.
The ULR phosphate reads down to 0.01 ppm in 0.01 ppm increments — the resolution you need to dial PowerPhos changes correctly. The alkalinity checker is what tells me whether to dose Fauna Marin Balling Light or wait another day. The nitrate checker validates that the filtration cascade is doing its job.
Paired with the AutoAqua Smart Stir for consistent reagent mixing, the Hanna stack is the actual feedback loop that keeps Atlantis stable.
Grouped by where it lives in the system. Click any product to buy or learn more.
