Description:This is a perfect, eye catching, low cost addition for the home aquarium. The Ball Sponge is available in a crimson red,yellow or orange color.The Ball Sponge requires moderate light and moderate water movement . The Ball sponge's shape can vary quite alot, but all pieces look unique and beautiful. Sponges use small holes called "pores" to suck in water and pump it through the interior of the Sponge. As the water is filtered through the Sponge oxygen and food are removed. 
Tech Note: When adding this item to the aquarium be sure to submerge the bag which carries it and release the water from the bag along with the sponge. Place in an area of the tank that gets moderate to strong water flow and shaded light. 
Approximate Purchase Size: 3" to 5"