A protein skimmer used mostly for saltwater aquariums is a small machine for removing organic chemicals from the aquarium water before they start to break down into nitrates and nitrite (Rot). In removing these natural chemicals before they decompose lightens the load on the organic/biological and mechanical filter reducing overall care. Protein skimmers are the only filtration system that may remove natural chemicals aside from living critters which will feed on them.
By passing water thru a strong column of bubbles, proteins, amino acids, fats and other organic chemicals are captured by the bubbles in the air/water barrier and are lifted to the surface where they accumulate as a foam. The foam, depending on what is being removed could be yellow, green or even like tar. The froth is picked up by the skimmer in a separate cup or container where it can be removed easily from the system and disposed of.The skimmer also removes carbohydrates, metals such as copper and trace elements such as iodine.
Keeping an eye on nitrates in the aquarium is crucial because of its negative affects on the life in the tank. So the protein skimmer is an essential part for a marine aquarium. There are a few kinds of skimmer that all work well. The pin-wheel type skimmers due to their small size appear to be the most well liked.
Although not necessarily used in all marine aquariums, particularly those of enormous size and depending on what other filtration may be in use, the protein skimmer is a must for smaller tanks. Low volume tanks are harder to maintain water quality so a protein skimmer actually lightens the testing and upkeep load.
So when you’re choosing items to include when starting a new marine tank, be absolutely sure the protein skimmer has a high priority on your list of things to get as personally I can’t see having a marine tank without one.
This writer has been concerned off and on with marine aquariums for almost 30 years. Sharing knowledge and experience on his tank pests which offers step-by-step instruction for marine tank setup for beginners.