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Slate Pencil Urchin -Eucidaris tribuloides

Slate Pencil Urchin -Eucidaris tribuloides

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The Pencil Urchin is an interesting addition to your aquarium that will help keep your tank clean at night. It requires a minimum tank volume of 30 gallons and is not reef compatible.

Category Invertebrate
Care Level Moderate
Diet Herbivore
Size 2 - 5 Inches
Origin Florida
Water Condition 72-78F, dkh 8-12, PH 8.1-8.4, sg 1.023-1.025
Water Flow Medium
Minimum Tank Volume
30 Gallons
Reef Compatible No
Compatibility See Chart 

During the day the Pencil Urchin will seek shelter in the rocks; at night it will come out and forage for food, looking particularly for algae lawns and smaller invertebrates like sea squirts or sponges. It can be destructive to corals. It requires an aquarium with multiple hiding places and live rock on which it can graze. The rock formations should be sturdy, since the Urchin could dislodge rocks as it moves around the tank.