The Arka Moai is a 16 cm high bioactive decoration for freshwater or saltwater aquariums made from natural raw materials. It is not only a decorative element, it also promotes, through its porous surface, the installation of beneficial microorganisms and the growth, which in turn constitute a source of food for fish and shrimp.

"Arche" type ceramic rock with a size of around 30 x 20 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Arche + column" type ceramic rock with a length of around 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Arche + column" type ceramic rock with a length of around 40 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Rock to stack" with a length of about 20 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Rock to stack" with a length of about 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Cave" type ceramic rock with a length of around 10 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Cave" type ceramic rock with a length of around 15 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Cave" type ceramic rock with a length of around 20 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Cave with two holes" with a length of about 10 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Cave with two holes" about 15 cm long.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 2 branches" with a height of about 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 2 branches" with a height of about 40 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 2 branches" with a height of around 50 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 3 branches" with a height of about 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 3 branches" with a height of about 40 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 1 branch Slim" about 20 cm high.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 1 branch Slim" about 30 cm high.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "Column 1 branch Slim" with a height of around 40 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Flying Reef" type ceramic rock with a length of around 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Flying Reef" type ceramic rock with a length of around 40 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Flying Reef" type ceramic rock with a length of around 50 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Flying Reef" type ceramic rock with a length of around 60 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Island" type ceramic rock with a size of around 20 x 10 cm and a weight of 1.4 kg.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Island" type ceramic rock with a size of around 30 x 20 cm and a weight of 3 kg.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Mushroom" type ceramic rock with a height of around 20 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Mushroom" type ceramic rock with a height of around 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

"Plateau" type ceramic rock with a length of around 20 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock "plateau" type with a length of around 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "tray with arch" of a size of around 20 x 10 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "tray with arch" of a size of around 30 x 20 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "tray with arch" of a size of about 40 x 30 cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "coral branch" with a length of around 20cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "coral branch" with a length of around 30cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "coral branch" with a length of around 40cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).

Ceramic rock type "coral branch" with a length of around 50cm.

Arka Reef artisan ceramics are naturally structured and handmade in Germany. REEF-Nature ceramics are biologically active in a short time , promote the rapid colonization of filter bacteria and encrusting algae and prevent the proliferation of potentially dangerous inhabitants such as fireworms, crabs or fire anemones (Manjanos).