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The ceramic texture has a nice, natural look that blends perfectly with my driftwood and rocks. My smallest shrimp were inside exploring within hours, and the tunnel's weight keeps it stable even with my corydoras digging around it.

My shrimp took to this tunnel within minutes of it hitting the tank, and the natural ceramic look blends perfectly with my driftwood. It's heavy enough to stay put even when my corydoras dig around it.

The tunnel’s ceramic texture is rough enough for my shrimp to grip while molting, yet it doesn’t scrape their shells. I’ve watched them squeeze through both ends, and it’s become their favorite midday hideout. Water params haven’t budged, so it’s doing its job safely.