Seaoura SR-802 Aquarium Thermometer Submersible Model:Black Press the B button to

Press the B button to adjust brightness to your preference

and the oxygen spraying effect is the best

A1: The Seaoura 3-in-1 gravel vacuum is designed for gravel washing

A7: It is suitable for small to medium-sized aquariums and provides additional biological filtration

Full-Spectrum Focus on Red and Blue for Plant Growth

Seaoura SR-802 Aquarium Thermometer Submersible Model:Black Press the B button toAbout this item Customizable Timer Display: Features both a 24 7 Always On mode and a Custom Timer mode, allowing for one touch switching to suit your needs. With adjustable screen brightness for optimal visibility day and night Aquarium Thermometer Calibrated: This aquarium thermometer features a built in calibration function, allowing you to fine tune temperature readings for maximum accuracy. This proactive feature eliminates uncertainty and