Marinepure PLATE 20x20x2.5cm Designed for Ammonia and Nitrite Removal under high flow. Deep pore structure will allow development of low oxygen zones, which will help with control of nitrates. Perfect for the creative hobbyist as it can be easily shaped. Use in sumps, between baffles, shape to fit in tight/custom places.

Marinepure BLOCK 20x20x8cm Ammonia, Nitrite & Nitrate Removal Primarily designed to provide deep anaerobic zones for de-nitrification in passive or low flow systems. Live rock substitute Use in Aquarium sumps

Marco Coralline Rock - Hybrid 18kg D-D Marco Coralline Rock represents a completely natural form of calcium carbonate rock, now available in a colored variant achieved through an innovative, proprietary paint-free process. This process has been developed to replicate the appearance of live rock covered in coralline algae. The distinctive purple hue gives your new reef...

Marco Coralline Rock - Premium Shelf 18kg D-D Marco Coralline Rock represents a completely natural form of calcium carbonate rock, now available in a colored variant achieved through an innovative, proprietary paint-free process. This process has been developed to replicate the appearance of live rock covered in coralline algae. The distinctive purple hue gives your new reef...

Marco Coralline Rock - ReefSaver 18kg D-D Marco Coralline Rock represents a completely natural form of calcium carbonate rock, now available in a colored variant achieved through an innovative, proprietary paint-free process. This process has been developed to replicate the appearance of live rock covered in coralline algae. The distinctive purple hue gives your new reef...