Penn Plax Tank Divider Size:Large these electronic dog toys stay

these electronic dog toys stay active for up to an hour before they automatically shut off

Veterinarian recommended and award-winning

Brightly colored and multi-textured

it can easily be cleaned

Penn Plax Tank Divider Size:Large these electronic dog toys stayInstantly converts one aquarium into two. Provides a separate area for breeding and baby fish Separates "rough" fish Allows for unrestricted filtration and heater circulation Available in the following sizes: 15 20 Gallon: 11 3 8" x 11 3 8" Large (28. 9cm x 28. 9cm) 20 Gallon: 11 3 8" x 15 1 2" Extra Large (28. 9cm x 39. 4cm) For odd sized aquariums, the plastic flo through divider may be trimmed to size.