Chapman & Rivett (SA) is a specialist in the design, installation and maintenance of irrigation systems and products. Some of the leading manufacturers who are associated with Chapman & Rivett (SA) are Hunter, Toro, Philmac and Rainbird. Chapman & Rivett (SA) supplies specialist pond equipment to the residential and commercial sector too.
Pond equipment from Chapman & Rivett (SA) consists of biological pond filters. These pond filters remove excess nutrients and ammonia from the water with the help of biological processes. In the biological pond filter, harmful materials such as ammonia, decayed fish, fish food and algae are converted into useful nitrites. When these nitrites turn into nitrates they can be utilised and consumed by pond organisms and plants.
This process of conversion in the biological pond filter takes place in three stages. In the first stage, filter matting removes all solid particles from the water. In the second stage, Zeolite, which is a natural substance, helps in the removal of poisonous ammonia. In the final stage, filtration takes place with the help of useful bacteria that have been harnessed within bio-balls.