Ista Round Bio-Sponge Aquarium Filter (Small) Calcium & Alkalinity Reef Crest Black Egg Crate

Reef Crest Black Egg Crate - 24x24in is a reef-safe black plastic grid panel for frag racks

Useful for aquarium top-off and RO/DI water storage applications

Oversized collection cup with drain: Handles heavy skimmate production and simplifies servicing

5 inches and needs an aquarium of at least 180 gallons

Ista Round Bio-Sponge Aquarium Filter (Small) Calcium & Alkalinity Reef Crest Black Egg CrateIsta Round Bio Sponge Aquarium Filter (Small) Compact Biological Filtration with the Ista I 145 The Ista Round Bio Sponge Aquarium Filter (Small) provides gentle mechanical and biological filtration for compact aquariums, breeding systems, shrimp tanks and other applications where a powerful intake current may be undesirable. When connected to an aquarium air pump, rising bubbles draw water through the porous sponge while increasing water movement and