TWO LITTLE FISHIES - MAG FOX Two Little Fishies Sale! from 925 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Magnetic Hose and pipe cleaner. Patent pending design by Julian Sprung. The MagFox uses magnetic attraction to propel a small brush inside aquarium hoses and pipes, allowing it to clean away algae and other deposits that block the water flow.