Marina Submersible Pre-Set Aquarium Heater 300W 27cm Hamster Toys If the tray is used

If the tray is used very often or by more than one cat the litter depth should be increased to 4 cm

Designed to put a stop to pulling from the front

Also used by Schutzhund and AKC competition trainers

Some issues with sensitivity can be

Marina Submersible Pre-Set Aquarium Heater 300W 27cm Hamster Toys If the tray is usedPowerful 300 watt Marina Submersible Aquarium Heater provides reliable heating for fresh or saltwater aquariums up to 300 litres (80 US gal) aquariums. The heater includes many practical features for easy use, safety and convenience, including an easy to access temperature set dial, on off pilot light indicator, and a bumper guard for fish safety. Made of durable high impact glass, its built to last under normal aquatic conditions. Key Features: 300