Poret Foam Filters These will be used over the weekend of the convention and can be picked up Sunday by 11:30am. 3x3x3″ Poret Foam Sponge Filter w/ Cubelifter $7.00 Add to cart 4x4x4″ Poret Foam Sponge Filter w/ Cubelifter $8.00 Add to cart 6x6x6″ Poret Foam Sponge Filter w/ Cubelifter $23.00 Add to cart Poret Foam Matten Filter w/ jetflifters For 40 Breeder $60.00 Add to cart