A very popular setup for saltwater and reef aquariums, but a type of filter that can become a nitrate factory if not maintained properly, here is information all about Wet/Dry Trickle Filters, such as how they work, the various types of setups there are to choose from, how to maintain one, and more.
A quite popular but also controversial biological filter choice, your About Guides discuss what wet/dry filters are, how they work, the good and the bad, as well as why and how some aquarists remove the bio-media.
Here's a photo that simply diagrams how to connect a wet/dry sump style filter to a pre-drilled or reef ready aquarium in four easy steps, which includes splicing a beneficial water flow adjustment ball-valve into the sump to tank water return line.
Photo from Drs. Fosters & Smith
From your About Guides, read product reviews and compare prices on what they consider to be some of the top wet-dry/trickle filters on the market.
Information about the many ways to add or install a sump, an overflow box, as well as combination setups in saltwater aquarium and reef tank systems.
Overflow boxes transport aquarium water to under cabinet sumps without having to drill aquarium glass. These boxes make it possible to utilize an under aquarium sump, opening up more opportunities for a wider variety of filtration methods.
Bio-Balls Don't Go Bad, They Just Get Dirty - Why blame the bio-balls for nitrate problems in your saltwater aquarium when it's not their fault?
It is NOT the bio-balls in a wet/dry trickle or other type of inert biological filter that go BAD! Just like with an undergravel filter, it is the "lack of proper maintenance" that turns them into a nitrate factory.