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Kent Marine 02120 Hydrometer

$16.28
Large numeric display includes sweet spot for marine and reef aquariums Water is gently diverted to bottom, reducing air bubbles from forming Designed to give temperature-corrected readings in warm water aquariums(68-degree to 85-degree F/ 20-degree to 30-degree C)

Kent Marine Essential Elements Bottle 16 Fluid Ounces

$22.99
Replaces biologically important trace minerals Does not contain phosphates, nitrates or gluconates For reef and marine aquariums