Eheim Quick Vac Pro is a battery-operated, aquarium vacuum to help make keeping your tank clean.
- No buckets, tubes or hoses
- Advanced suction power to remove dirt particles, waste and extract sludge
- For use in aquariums with a minimum depth of 12"
- Fully submersible to 3 Ft.
- Super fine mesh cartridge traps waste particles and snaps out easily for cleaning
- Not recommended for fine sand and gravel
- Eheim Model Number: 3531090
- Battery Life: 4 Hours
Eheim – http://www.eheimna.com/contents/contactus
The Quick Vac is fully submersible to 3 Ft so you should be just fine in a 27" deep tank.
Hope this helps! Have a great day :)