Salty Q&A: Need Advice on GFO Use

Q: I’m thinking about using GFO in my reef tank, but this product is new to me, so I have a few questions before I go ahead and buy it: Does GFO really do a good job of lowering nitrate…

Understanding the Usefulness of GFO – Phosphate Removal Media

GFO, which stands for Granular Ferric Oxide, is a red brown powder that is compacted into granules. The purpose of granular ferric oxide is to inhibit algae growth by removing phosphates from the aquarium. Maintaining low phosphate levels will help…

HydroClear & HydroClear XP, pre-rinsed activated carbon & GFO

HydroClear and HydroClear XP is Two Little Fishies’ new pre-rinsed and pre-packaged chemical media filtration products. Both media bags help to create clear and colorless water which is beneficial for the health of the aquarium corals, fish and invertebrates, and helps…

AquaMaxx Phosphate Out Pro is a GFO with even more PO4 removing power

Phosphate Out Pro is a new, higher capacity phosphate remover for aquarium use that is made of the highest capacity granular ferric oxide (GFO) currently available. It’s been a few years since the release of the original AquaMaxx Phosphate Out…

Cobalt Aquatics E-X-T GFO filter sponge is a handy way to pull out PO4

The Cobalt Aquatics E-X-T GFO filter sponge is a new chemical filter from Cobalt Aquatics with phosphate remover built right in. Filter pads impregnated with chemical media have been around for years, but to date the mediums used have been zeolite…

GFO for Reef Aquarium Phosphate Control

Granular ferric oxide, or GFO, is a widely used form of chemical filtration in the reef-keeping hobby today. Chemical filtration, as the name suggests, purifies water by binding up impurities at the molecular level. As water is sent through the…

New Era Phosphate Remover signals that the food manufacturer is branching out

It looks New Era is branching outside of the food realm with the New Era Phosphate Remover that was spied at Aquariya 2012, a trade show in Dubai. We have been impressed with the company’s food lines and are wondering…

ATB Biopellets, Carbon and GFO coming soon from Sea Side Aquatics

ATB Biopellets, Carbon and GFO will soon be available from the German Austrian company well known for it’s high quality skimmers. Today the biopellets should become available from Sea Side Aquatics and the activated carbon and GFO should arrive later…

Pre-sifted carbon and GFO from Reef Scientific are clean, easier to use media

The Reef Scientific pre-sifted activated carbon and granular ferric oxide (GFO) medias from Midland Reefs are evidence that sometimes the simplest ideas can also be some of the best. Most of us are familiar with that extra step between us…