Wet Dry filters (aka Drip Filters
or Bio Towers) are aerobic filters. Water from the aquarium is
dripped over Bio Balls, which are optimally designed to provide
surface area and oxygen for biotics. Microbes filter the passing
water, which is collected and reintroduced to the aquarium. Wet
Dry filtration is best if used in conjunction with a prefilter
or protein skimmer to keep large particulates out of the system.
Advanced Wet Dry filters include an additional skimmer that filters
water before it gets to the bio-material. A water gate allows
manual adjustment of the skimmer's height, ensuring an optimal
degree of water treatment before it is reintroduced to the aquarium. |