Biological filter media is back – here’s how to use it

The reintroduction of biological filter media has been one of the most significant changes in reefkeeping in the last 10 years. For decades, the Berlin Method taught us to ditch “traditional” aquarium filtration methods and instead rely on the microbial…

Is It Possible to Overdo Marine Aquarium Water Changes?

In a recent meandering conversation I had with my freshwater-pond-keeping brother-in-law, the question of water change volume and frequency was raised—specifically whether it’s stressful to the livestock if you perform them too frequently or change out too much water at…

Understanding Old Tank Syndrome

Old Tank Syndrome, or OTS, is something we have been hearing about since the hobby started, and I am not quite sure exactly what it means. Is it due to parameters, loss of diversity, lack of interest, diseases, metal accumulation,…

The Pros and Cons of Aquascaping Marine Aquariums with Dry Rock

When aquascaping their tanks, marine aquarium hobbyists have the option of using live rock or dry rock (or some combination thereof) to create the foundational reef structure. Each of these options is completely workable but, as with every aspect of…

Marine Aquarium Acronyms: FOWLR Tank Defined

Marine aquarium hobbyists do love their acronyms—SW, SG, SPS, LPS, BB, HO, VHO, DOC, LR, LFS, and RO/DI to list but a few. There are so many of them floating around out there on aquarium forums and in hobby literature…