Natural rocks "The reef Rock" (20kg) - Size L Contains a mix of large size rock ranging from 26 cm (10 inch) to 32 cm (13 inch) size. Each rock weight 3 kg to 4,5 Kg. Collected in the Oceania tropical nature. 100% natural rock, 0% artificial rock. THE REEF ROCK® is a ready-to-use natural rock collected from a sustainable source causing a low environmental...

Natural rocks "The reef Rock" (20kg) - Size M Contains a mix of medium size rock ranging from 20 cm (8 inch) to 24 cm (10 inch) size. Each rock weight 1,5 kg to 2,5 Kg. Collected in the Oceania tropical nature. 100% natural rock, 0% artificial rock. THE REEF ROCK® is a ready-to-use natural rock collected from a sustainable source causing a low...

Natural rocks "The reef Rock" (20kg) - Size S Contains a mix of small size rock ranging from 13 cm (5 inch) to 20 cm (8 inch) size. Each rock weight 0,5 kg to 1,5 Kg. Collected in the Oceania tropical nature. 100% natural rock, 0% artificial rock. THE REEF ROCK® is a ready-to-use natural rock collected from a sustainable source causing a low environmental...

Denitrification catalyst 5pcs for Maxspect Anaerobic Block For optimum efficiency, it is recommended to change the denitrification catalyst every 2 months and the Nano-Tech Anaerobic-Block should be cleaned or replaced ...

Maxspect Nano Tech Phosphree 500 ml Maxspect Nano-Tech Phosphree is a chemically stable polymer resin that does not release metal ions into the water column, unlike metal-based sorbents. Granular ferric oxide, or...

Maxspect Nano Tech Phosphree 250 ml Maxspect Nano-Tech Phosphree is a chemically stable polymer resin that does not release metal ions into the water column, unlike metal-based sorbents. Granular ferric oxide, or GFO, not only...

Maxspect Nano Tech Clear Cube 8pcs Maxspect Nano-Tech Clear Cube are tourmaline-based cubes with unique water clarification capabilities. The Nano-Tech Clear Cube dissolves, dissociates and breaks down dissolved organic matter (DOM) present in the water, eliminating the yellowish tint...

Maxspect Nano Tech Anaerobic Block The Maxspect Nano-Tech Anaerobic-Block for freshwater and saltwater aquariums effectively removes nitrates from the aquarium. This patented technology is specially designed to stimulate the multiplication of anaerobic bacteria. These...

CaribSea Life Rock Original (18kg) Ecological aquascaping made easy Replicate the live rock effect in your aquarium with Life Rocks by CaribSea: created from real ancient marine rocks, Life Rocks are a natural biological filter that works to denitrify any closed marine environment and keep the water clean and stable. They are environmentally friendly and help to...

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

CaribSea Life Rock Belize shelf (18kg) CARIBSEA Life Rock Shelf are aragonite-based, flat stone-shaped stones covered with a film of bacteria that reactivates during impoundment. Good alternative to living stones or in addition to them, the Caribsea Life Rocks offer excellent porosity without the inconvenience of adding unwanted potential due to wild living...