The pond filter is a key ingredient to a clean and healthy pond. It is a little bio system that traps and processes pond debris. Your filter should have sufficient surface area to support a bacterial population large enough to neutralize nitrogenous waste. Basically that just means that you need enough area in your filter to have plenty of “good” bacteria to take care of the waste from the fish.
So, the main requirement of a basic pond filter is area. The more available area, the better it will workThere are a lot of pond filters on the market. I offer one that I make myself (and have been using for years), but I must be fair and give you some information first on what else is available.
The pictures above show three different types of pond filters. The one on the left is an Aquabead Pond Filter. It is a very elaborate filter with many “bells and whistles” as Aquabead says in their literature, and I am sure it does everything they say it will do. This would appear to me to be a top of the line filter. These units come in several sizes and range in price from $1150 to $3000.
The filter shown in the middle photo is a submersible from Pondmaster, and is rated for ponds up to 1000 gallons for $35 and a similar but larger model that will handle a 2000-gallon pond for $58.
The filter on the right is a non-submersible pressurized type. These sit somewhere outside of the pond and unless you want the filter to show, will need to be camouflaged in some way. There are many different sizes of these filters also and this one is rated for ponds up to 2000 gallons and sells for $180.
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