Penn-Plax Action-Air Treasure Chest Small Bubbler Cabinet Substrate is designed to release

Substrate is designed to release low ammonia levels during the initial stage of a tank setup

and less time maintaining it

so that you can place the item directly against the back wall

3x per week (maximum dosage) with 50% weekly water change

Freshwater Only

Penn-Plax Action-Air Treasure Chest Small Bubbler Cabinet Substrate is designed to releaseFeatures Penn Plax Action Air Treasure Chest Ornament adds real underwater movement to your tank. The chest opens and closes when connected to an air pump. Bubbling action helps aerate your water for healthier fish & plants Safe for all aquariums Resin ornament Installation is simple: just plug into your existing airline and enjoy! (Air pump, tubing and gang valve are not included)