Choosing a Filtration System for Your Saltwater Aquarium
For Freshwater Aquarium filter systems/combination suggestions, please see this article:
How to Search for Used Aquarium Filtration Systems on eBay Now that you’ve found out the different types of available, you can now begin your search on eBay. To start your search, go to the link on the homepage of eBay. Click , and then select which appears on the left-hand side of the page.
There is no harm in letting the tank cycle when you’ve purchased a used aquarium filtration system. If you’re unsure as to what ‘cycling a tank’ means, it really is a very straightforward process, which can be completed by following these steps:
Cheap Filtration System for a SMALL Aquarium: 5 Steps
What to Look for When Buying a Used Aquarium Filtration System | eBay
Biological filtration: This is the process by which nitrifying bacteria break down ammonia and nitrites. I will not cover the basics of biological filtration. That is detailed in many other sources. Just realize that it is easy to have adequate nitrifying bacteria in aquariums containing ornamental fish. In intensive aquaculture, it is common to raise as much as 1 lb of fish per gallon of water, with relatively small biological filters. That would be equivalent to raising somewhere around 100-150 adult angelfish in a 20 gallon tank. In such a system containing angelfish or other ornamentals, problems from dissolved organics and heterotrophic bacteria would destroy the fins or kill the fish long before ammonia or nitrites became a problem. A surprisingly small biological filter can handle the ammonia produced in the average aquarium containing ornamental species. So, although biological filtration is very important, it's also very easy to provide with a small inexpensive filter. The only requirement is that the filter does not clog so the nitrifying bacteria has constant exposure to oxygenated water, and that the filter does not move the water too fast, producing the dangerous micro-particles of waste that are so harmful.There are many types of biological filters on the market. Under gravel filters, bio-wheels, wet/dry or trickle filters all have the same goal, to house and grow nitrifying bacteria. These types of filters are essential for fish only systems. Without sufficient surface area for the bacteria to grow, the carrying capacity (i.e. the amount of animals the aquarium can safely support) quickly becomes very low. The reason for this is the presence of toxic ammonia.