5.9 Big Prefilter Sponge Foam Replacement Filtration Kit For Pond Aquarium Fish Tank, 6 Pack

6 pack of premium quality pre-filters. Replacement pre-filter foam: Fits inside your Pre-Filter or water garden pump pre-filter to help reduce pump clogging. Easy replacement: Just remove the old foam and replace with the new foam. Widly Usage – Provide filtration in fish tank turtle tanks terrariums and pond filter. Eg. fit for Eheim 250-600 CF-600-1200. Size: Inner Hole Dia: 2cm/0.8; Outer Dia: 6.5cm/ 2.6.