Juwel Filter Basket System suitable for: Delta 80, Delta 100, Lido 100, Panorama 80, Panorama 100, Rio 125, Rio 180 and the Vision 180. Using Juwel filter baskets means that you may assemble your filter sponges outside the aquarium and then slide the complete basket into place in one action. No more fiddling about with your hand submerged at the bottom of the filter. Removal of your used filters is just as easy. Just pull on the top of the basket and the whole assembly just slides out. Just follow the four easy steps shown to maintain your filter system. There are 2 baskets per pack as shown in the picture.