Pawfly 2 Pack Aquarium Bio Sponge Filter Media Pad, 40 PPI Filter Foam Sponge Pads Cut-to-Size Foam for Fish Tank Filters Sumps Ponds Hydroponics, 9" x 9" x 0.5"

Features

• Mechanical Filtration: The aquarium bio sponge filter pads can effectively trap debris, food residue, wastes or other impurities in water. Prevent them from entering the aquarium to keep water clean.
• Fine Sponge Filtration: With larger contact area with water, the filter sponge pads are helpful for the accumulation of beneficial elements. Provide biological filtration to fully remove excess damaging substances.
• Size: 9" x 9" x 0.5", PPI: 40. The filter pad can be cut to fit and used as a pre-filter for any aquarium, such as wet/dry filters, canister filters, power filters, etc. Also work great for sumps, ponds or HMF DIY project.
• Reliable Material: The aquarium filter pads are made of soft and foldable foam with reticulated structure and fine air and water permeability, which can provides better flow rate of water and less chance of clog.
• Easy to Use: Before use, rinse the sponge pad with cool water to remove the outside dust, then cut it to the proper size and fully put it into the filter chamber. Replace it every 2 to 4 weeks to maintain a healthy water. (Please unpack and let it stand for 24-48 hours or soak in water before use for best results.)