Added a black background to my aquarium, love the result! : r/Aquariums

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Shades of Aquarium Style: Exploring Black and White Background Options - PetHelpful

【High Quality 】Double-sided fish tank background is made from thickened PVC, it is waterproof, easy to clean, non-glare, not easy to fade and durable.

ELEBOX Aquarium Background Blue Black Fish Tank Background Picture 2 Sides Fish Backdrop for Aquarium Wallpaper 20 x 48

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A Black Background Makes Such A Difference! R/Aquariums