Review on 🐠 Koral Filters PRO Koi Pond Filter Pad Roll - Blue Bonded - 12x72 Inches - Durable & Cut-to-Fit - Ideal for Fish and Reef Aquariums by Laurie Nelson

I cut this material to fit a 12 x 12 filter powered by a Tetra pump. I change it depending on the circumstances and am very satisfied. I've included some photos to show you what he collects, the filter and Goldie, who spends the winters indoors, in 100 gallons. Reservoir and summer outside, in her 400 gallon pond, 8 x 4. I use the same filter and material. The fish pictured was an inch long 25 years ago. Both Goldie and Water look good.