Under Gravel Filter

Secretly the BEST Filter? Why the Under Gravel Filter rocks!

Understanding the differences between a Plenum and an under-gravel filter.

Undergravel Filter Good or Bad? - Fish Room Update Ep. 50

Why We Broke Up With Under Gravel Filters

Switching Your Aquarium Substrate From Gravel To Sand! 125 Gallon Aquarium Overhaul!

DIY Exnternal aquarium filter from PVC

I use undergravel filters in every tank successfully!!!!!!!!

Why I NEVER Change Water in My Aquariums! (Auto Water Change System)

Under Gravel Filters - Update! NO More Water Changes??? The completion of the Nitrogen Cycle!!!

Bringing Back the WET DRY Trickle Filter!!

A Defense of Undergravel Filters

Air Driven Filters - how placement matters for sponges, under gravel filters and more.

The best aquarium filter in the world?

A New Look To Undergravel Filters

Under Gravel Filters SUCK! Why Grandpa's old aquarium filter is a thing of the past

4 Feet 70 Gallon Tank Plenum Set Up

This is ACTUALLY The Method For Crazy Clear Aquarium Water...

FINAL Look at my Planted Under Gravel Filter Tank

Fish Tank Filter Showdown: Under Gravel Filter vs Sponge Filter!

The BEST DIY aquarium filter for any fish tank