ALEGI Filter Media Bags ALEGI offers 6 mesh bags in different sizes to meet your different needs. Read more ALEGI Filter Media Bags Filter bags are good for various filters,including fresh water tanks,tank filters, power filters,etc. Professional aquarium filter bag,reusable after cleaning,special plastic zipper that is corrosion resistant. Suitable for various filters, such as dry/wet filters etc. Note: The filter bag hole is about 2 mm in diameter and is not suitable for seachem purigen. Read more Zipper is plastic, You do not worry it would rust and produce harmful substances The filter bag hole is about 2 mm in diameter, good for holding large media items, such as Pellet carbon, bio balls, bio ceramic rings, crushed lava rocks, zeolite, gravel. Our large filter media bag close tight to prevent loose media from potentially causing damage to your water pump or power filter's motor. The Mesh Bags with Plastic Zipper is completely safe for both fresh and saltwater aquariums. Read more Filter media bags 6" x 4" 10 pcs Filter media bags 6" x 5" 10pcs Filter media bags 7.8" x 5.5" 10pcs Filter media bags 10" x7" 10pcs Filter media bags 11.8" x 8" 10pcs Filter media bags 15.8" x 11.8" 10pcs Size 10cm*15cm/ 4"*6" 15cm * 13cm/ 5" * 6" 14cm*20cm /5.5" * 7.8" 18cm * 25cm/ 7" * 10" 20cm*30cm/8"*11.8" 30 cm * 40cm/11.8" * 15.8" Package 10 pieces White 10 pieces Black 5 pieces White,5 pieces Black 5 pieces White,5 pieces Black 5 pieces White,5 pieces Black 5 pieces White,5 pieces Black Capacity About 0.5 lbs Ceramic Ring About 1 lbs Ceramic Ring About 1.5 lbs Ceramic Ring About 2 lbs Ceramic Ring About 4 lbs Ceramic Ring About 10 lbs Ceramic Ring