Category Archives: Filtration

Undergravel Filters

Q) How do I go about setting up a basic undergravel filter for a marine aquarium? A) Over the last ten years or so, marine filtration has advanced in leaps and bounds, leading many to believe that there is no future for the technique that sustained marine livestock for several generations.......the undergravel filter. Such beliefs are,…
Read more

Bacteria Revealed

After all these years, it turns out that the nitrifying bacteria are not what we thought. Biological filtration is the critical filtration component in every aquarium. Whether the biological filter is live rock, trickle media, a sponge or any other substrate, the oxidation of ammonia to nitrite and then to nitrate is necessary to keep…
Read more