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Elevate your aquatic adventures with the Sera Marine Hydrometer! This essential test kit ensures your salty setups are thriving by accurately measuring specific gravity. Perfect for every reef enthusiast, it brings clarity to your water quality.
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We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2026
$26.00