Check the listing for details. Maxspect Nano-Tech Clear Cube 8pcs. Condition: New. Listed at 34.99 USD. Maxspect Nano-Tech Clear Cube 8pcs Clarifies aquarium water without the mess The Maxspect Nano-Tech Clear Cube is a tourmaline-based brick that breaks down DOM (dissolved organic matter) in aquarium water by dissolving and dissociating of water as a result, keeping your aquarium water clearer for an extended period of time as compared to granular activated carbon. Features Breaks down dissolved organic matter (DOM), removing the yellow color in an aquarium. Long lasting effect, water stay crystal clear for longer. Helps combat cyanobacteria and other nuisance bacteria/Fungal in your aquarium. Treats up to 100 Gallons Clarifies aquarium water without the mess The Maxspect Nano-Tech Clear Cube is a tourmaline-based brick that breaks down DOM (dissolved organic matter) in aquarium water by dissolving and dissociating of water as a result, keeping your aquarium water clearer for an extended period of time as compared to granular activated carbon. Features Breaks down dissolved organic matter (DOM), removing the yellow color in an aquarium. Long lasting effect, water stay crystal clear for longer. Helps combat cyanobacteria and other nuisance bacteria/Fungal in your aquarium. Treats up to 100 Gallons eBay integration by