This egg crate is made of Styrene / plastic which is safe for aquarium. It is durable and does not leach chemicals into the water.

Applications

Can be used as tank cover or in sump tank.

Can be used to trap large floaters such as leaves and algae strands to prevent filter system from choking.

Can be used as a base to support rocks.

Specifications

Material: Styrene / plastic

Dimensions of egg crate: 1230 x 603 x 12.7mm

Individual cell size: 15 x 15 x 1.7mm