Seachem Flourite Black Sand SmallAnimalAccessoriesCategory_Platforms & Perches If any of the measurements

If any of the measurements are 'between' two sizes

probiotics and antioxidants

and is made in Canada

And of course the feeders fit feeder openings on the VARILUX aquarium hoods

5 oz / 14 oz

Seachem Flourite Black Sand SmallAnimalAccessoriesCategory_Platforms & Perches If any of the measurementsFlourite Black Sand is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment. Flourite Black Sand is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels. Gravel modifiers such as laterite are not necessary. Flourite Black Sand is not chemically coated or treated and will not