Xinyou Corner Filter Model:XY-2010 Aqua One MiniReef 90 is

Aqua One MiniReef 90 is an award-winning compact marine and reef aquarium system designed to deliver professional reef keeping performance in a sleek and space-saving package

boosting biological filtration and maintaining clear

Concentration is 40 mg/ml of total ammonia-nitrogen (TAN)

They are widely regarded as durable

Xinyou Corner Filter Model:XY-2010 Aqua One MiniReef 90 isXinyou Corner Filter is a compact internal aquarium filter designed to fit neatly into the corner of freshwater aquariums while providing efficient mechanical and biological filtration. Its space saving triangular design maximises tank space while the integrated sponge and filter media trap debris and support the growth of beneficial bacteria that help break down harmful ammonia and nitrite. Ideal for small aquariums, shrimp tanks, quarantine tanks,