Blue Ribbon Exotic Environments Swim-Through Stone Chamber Aquarium Ornament 6.25in LG Litter Aquarium water can fluctuate up

Aquarium water can fluctuate up or down due to biological and/or chemical activity within the aquarium

Protects against sudden ammonia spikes

Use alone for light seasonal flow and urination issues

it's all about the fish

Blue Ribbon Exotic Environments Swim-Through Stone Chamber Aquarium Ornament 6.25in LG Litter Aquarium water can fluctuate upBlue Ribbon Exotic Environments Swim Through Stone Chamber Large. Holes, chambers, caves OH MY! These terrific hide outs are just perfect for an aquarium or terrarium full of fish or reptiles of any kind. Natural bumps, curves and holes make this rock structure a great addition to any fresh or saltwater tank.