Laguna Pressure Flo PF2500 Filter Foams compact Position in high-flow areas of

Position in high-flow areas of your aquarium or pond

the balls slowly biodegrade

Fast and Easy to Use: Quickly test and monitor ammonia levels in your tank

Assists in osmoregulation by balancing the natural movement of salts and water in fish

often combined with silicates

Laguna Pressure Flo PF2500 Filter Foams compact Position in high-flow areas ofThis is a set of replacement foam filter pads for the Laguna Pressure Flo PF2500. These high quality, super absorbent foams are custom designed to fit inside the Laguna Pressure Flo filter. They're easy to install and provide complete mechanical filtration, trapping dirt and debris. Ideally you should change the foams in your pond filter every year.