External Aquarium Filter Pre-Filter Sponges (4-Pack)

Protect your external aquarium filter from debris and clogging with this set of four pre-filter sponges. Designed to trap large particles before they reach your main filtration system, these reusable cartridges help maintain optimal water flow and extend the life of your filter. Includes four durable sponge cartridges for continuous use Specially designed to fit EW-604 and HW-604 external filter models High-density sponge material effectively traps debris and particulates Reusable design allows