Biological Filters and Filter Kits
Biological filtration is essential for clear water.
It is the maintenance of tiny organisms that keep the bacterial/algal system in balance.
![Image Double EZ Bio 20 Filter](https://www.pondmasterstore.com/shop/images/th_p.784.1-ezbio_20.jpg)
Double EZ Bio 20 Filter
Matala Pre-Filter for 1200gph & up Pumps
![Image Double EZ Bio 11 Filter](https://www.pondmasterstore.com/shop/images/th_p.786.1-mwt164.jpg)
Double EZ Bio 11 Filter
Matala Pre-Filter for 250gph & up Pumps
![Image Matala Single EZ Bio Filter 11 Plus](https://www.pondmasterstore.com/shop/images/th_p.782.1-ezbio11_plus_update.jpg)
Matala Single EZ Bio Filter 11 Plus Sale!
Pre-Filter Works Great with Pondmaster Mag Drive Pumps