Aquarium Filter Foam Sponge Pad, Cut-to-Size 19.6x19.6x1.57, 35PPI

The pore size of sponge filters plays a crucial role in their performance. The 25PPI (pores per inch) pore size option enhances the water passing rate and effectively filters debris and fish manure in the water. The 35PPI pore size sponge filters exhibit good water permeability, filtration performance, and flexibility. The 50PPI pore size sponge filters are particularly effective at filtering fine fish manure and impurities, which helps to cultivate beneficial nitrifying bacteria.

Large-sized filter pads, measuring 19.6" x 19.6" x 1.57", are available to be cut to fit any aquarium or pond filter. To compare the sizes of other brands, you can use the volume calculation formula: 19.68(L) x 19.68(W) x 1.57(H) = 608 cubic inches. The larger the parameter, the bigger the sponge. This information will help you find the best value for your money.

Sponge filters provide both mechanical and biological filtration, trapping large amounts of waste without clogging easily. The size of the pores, measured in PPI, determines the number of pores in the sponge unit area. The higher the PPI, the more pores the sponge contains. It is recommended to use a combination of different-sized sponges for optimal filtration results.

These filter pads are dye-free and safe for aquatic pets. They are typically used as pre-filters for wet/dry filters, catch basins, and tank filters. Regular cleaning is required, but the filter pads are reusable and durable after cleaning.

The filter pads are vacuum-sealed and compressed for space-saving storage and easy transport. They are suitable for all types of aquariums. Before use, simply unpack the filter pads and follow the instruction steps to restore them to their original size, and they will be ready for use.

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