Charterhouse 3D Bio Stackers - Flat - For Biological Media Blocks

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Charterhouse 3D Bio Stackers - Flat are designed to hold your biological media blocks (maxspect/mantis/polylab etc)Increase the flow around your biological media helping to improve biological filtration, plus keep your block neat, tidy and easily accessible.Need more than one rack? Bio Stackers are modular, meaning Bio Stackers can be stacked on top of each other when adding extra blocks or if you simply have more than two. *each bio stacker flat hold two biological blocksAll Charterhouse 3D products are printed in-house using PETG plastic, meaning the product is completely aquarium-safe and UV resistant. Show more