Koral FiltersKoi Pond and Aquarium Filter Media Roll - 12 Inches by 72 Inches by 1.25 Inches (6 ft) - Cut to Fit - Durable - Fish and Reef Aquarium Compatible - Clear and Clean Water

SO glad I found this company! I was going to Pet Supplies Plus for years to get filer material for our fish pond and it was always hit & miss. This is a much more economical way to keep our water clear. Thank you! (And please never go out of business!)

This is like magic in clearing up a 2200 gallon pond...I added the Algae fixer and the destroyer the day before adding the blue matt.. next morning you can see the bottom of the pond....I have used this each year for several years...

Last year someone bought property uphill behind my 3800 gallon Koi pond and cleared off a lot of brush and grasses - that lot is now just dirt, much of which is washing downhill and into my pond. The water got so thick with dirt I could only see the fish when they surfaced for food. I have 375 gallons of filtration that had always kept the water clear and healthy; the tanks became clogged with mud and the weekly cleanings weren't making a dent in the mess. I decided to try this along with my regular filtration. 3 weeks ago I got my first two 10-foot rolls; put it as an extra layer in my mechanical filter and the filter at the head of my stream, into the skimmer box, wrapped the pump in the bio-filter, even around the exit tube in the vortex for the first few days. I've been kept very busy pulling and hosing tons of mud off this material, but it's working! I ordered another couple of rolls, changed the configuration in the mechanical filter where I have an upright "wall" of this material (preceded by several layers of matala), followed by 100 micron felt pads, and another layer of this material, and today the water is clearer than I can recall it being in several years! I'm *very* pleased with this product! My only complaint is that it does deteriorate fairly quickly under many and hard hosings. But now that the mess is gone I'm sure this will help keep things manageable without having to hose the crud out of it every couple of day. Highly recommend as an addition to regular filters/biofilters to keep the water cleaned up of floating gunk! The pix I posted aren't the best, the lighting was too bright, BUT you can see the bottom, and the lily pot on the bottom - which is 5 feet down!

Got for work. Better price and easier to get than running into town and paying double the money! Fast shipping even!

Works well for my outdoor fish pond I'm pretty happy with the purchase it is reusable but hard to get clean to really have to work at it if you want to reuse it

Seemed ok but I layered it with another filter product because it was just too thin and the force of the water pushed it out of my frame that holds the filter. I will not order it again.

durable and well-made, as promised, easy to rinse out and reuse

Working great. Easy to cut to size. Fish love it!