Red Sea Seawater Refractometer Batfish sera marine GVG-Mix Nature is

sera marine GVG-Mix Nature is the natural staple food for surface-oriented marine fish without dyes and preservatives

Aquatop's Mantis Mini Aquarium Heater's compact design allows for versatile placement in small aquariums

Used the world over for more than 12 years

Tannins can provide a natural tint to the water

Red Sea Seawater Refractometer Batfish sera marine GVG-Mix Nature isRed Seas Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 25C 77F. Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine (NaCl rather than seawater) at a temperature of 15C 59F rather than 25C 77F. Thus, a measurement deviation of up to 1. 5ppt is possible, which can have a significant