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Best Choice Fluval 
Fluval Plant and Shrimp Stratum, for Fish Tanks, 4.4 lbs., 12693 Facilitates Rapid and Beneficial Colonization: Its porous structure enables swift colonization of beneficial nitrifyingSeachem 
Seachem Fluorite Natural Gravel (SC3733) Premium natural gravel for the planted aquariumBest Value Seachem Seachem Fluorite Natural Gravel (SC3733) Premium natural gravel for the planted aquariumFluval 
Fluval 12695 Plant and Shrimp Stratum for Freshwater Fish Tanks, 17.6 lbs. – Aquarium Substrate for Strong Plant Growth, Promotes Robust Plant Growth: Stratum fosters vigorous plant development by facilitating easy root penetration and nutriAqua Care 
Aqua Care Aquarium Gravel Sand Black, 1kg - Softer Texture, Suitable for Freshwater and Saltwater Fish Tanks, Aqua Safe, Smooth Texture and Fine Particle Size: With a softer texture that's ideal for species that like to burrow or sift througUPAUS 
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