Size details: the package comes with 4 pieces 8 x 4 x 1 inch, 30PPI pre-filter foam sponges.
Thi Bio sponges are made from quality filtration foam, safe to your fish
Can be cut to fit your filters.Used for any aquarium or pond filter.
Suitable for freshwater or marine aquariums，Aquarium Filter Media Sponges could help to trap particles and debris, prolong the life of your filter media, and provide efficient water flow with less clogging for long lasting filtration;
Regular cleaning! can be reused after cleaning.it is durable.
