Two Little Fishies Nano-Mag Magnet Cleaner
Product Description:
* Miniature algae scrubber for keeping nano aquariums clean
* Magnetically coupled scrubber effectively removes algal film
* Extremely thin scrubber pad fits even tight aquarium spaces
*glass or acrylic up to 3/8" thick
*The NanoMag scrubber pad measures 1" x 1" x 1/8" thick.
* External magnet measures 1-1/2" diameter.