Which Types of Pond Filter Media Are Best?

Filter media is the substance that can be found in the filter, and is responsible for retaining good bacteria. It comes in various densities, sizes and shapes. Some resemble little plastic balls, while others come in the form of blocks or mats which are fibrous, while others are spiral shaped. With all these different options available, it can be difficult for pond owners to choose, but below is a guide which will greatly simplify the process of choosing a pond filter media.

The Importance Of Experimentation

You will want to try out different types of filter media to decide which is best for your pond. Purchase a mixture of ridged balls, media pads and plastic strips. Some are sold pre-cut while others are available by foot. However, irrespective of which type you buy, there are three characteristics which you must pay close attention to, which are the surface area, durability and density.

For surface area you will want as much as possible. The reason for this is because it gives the good bacteria more space for growth. Durability is essential as you want filter media that will last as long as possible, resisting wear. The density also has to be just right. If you buy media pads, they will typically come in four different densities so this gives them an advantage over the other options.

Density also influences water flow rate, and allows for superior bacterial colonization. When you use multiple filter media types, you will maximize both the mechanical and biological filtration capabilities of your pond, which is a necessity for any system that is enclosed.

Filter Balls

Filter balls have lots of surface area, are simple to clean and can be reused. They also assist in keeping the pond water pristine and clear. They are much lighter than traditional tools such as porous stone and because they will match the shape of any filter box in which they are placed, they can last for a long time. A typical package will come with about two hundred balls which capable of filtering up to a thousand gallons of water.

Filter Media Pads

Aside from coming in four different densities, filter media pads have the advantage of being light in weight, simple to cut and yet durable. The four densities are distinguishable by color, with the low and moderate density pads being well suited to mechanical filtration, whereas the high density pads are the best option for filtration which is biological due to their greater surface area. This filter media also comes with a coating which gives water the opportunity to pass through with ease free of channeling. A single media pad can filter as much as five hundred gallons.

Perhaps the best thing about media pads is their ability to be cut into suitable sizes. This can be done with a blade that has a fine tooth, or with a curving knife that is about 8 inches. Some have also used a band saw.