Penn-Plax Inc.

shorefins™ Tank Divider - XXL - Converts One Aquarium Into Two - Fits 29 to 55-Gallon Aquariums

Cascade™ Therma-Temp™ Floating Thermometer provides a simple and reliable way to monitor aquarium water temperature. Designed to float freely or attach to aquarium walls, it helps support a stable environment for freshwater and saltwater fish.

Cascade™ Therma-Temp™ Stainless Steel Aquarium Thermometer - Mercury Free - Safe for Freshwater and Saltwater Fish

Cascade™ Deluxe Air+Check Valve - 2-Pack - Adjustable Gang Valve Outlets

Cascade™ Deluxe Air+Check Valve - 3-Pack - Adjustable Gang Valve Outlets

Cascade™ Lok-Tite® 3-Gang Valve - Air Regulator Gang Valve for Aquariums