Biocube Filtration (water conditioning/movement/filtration):Stock Filtration:
All sizes of the stock biocube use the same methods for filtration. First water is drawn through a filter cartridge (carbon covered with filter floss). This provides both mechanical and chemical filtration for your tank.
Water then travels over the top of the dividing wall and into the middle chamber. This is where the bioballs provide the biological filtration.
Next water is pulled down to the bottom of the middle chamber and drawn through a sponge separating chambers 2 and 3. This provides an added layer of mechanical filtration while also protecting your return pump from large particles that can cause damage to the rotor blades.
Finally to complete the cycle water is returned to the display using the stock return pump. The return pump is an import part of the filtration cycle, that will be discussed later on.
BC-8 106 gph
BC-14 137 gph
BC-29 243 gph
*The filtration process in the biocube also helps to oxygenate the water which is a very import part in keeping a healthy tank.
As you can see the people at oceanic have done a good job designing a tank that incorporates all 3 types of filtration: Mechanical, Chemical, and Biological. So why would you want to make any changes?
Well, there are a couple reasons why people decide to make changes, for me it was a combination of increased performance and my insatiable appetite for DIY projects. I am going to break this article into 4 parts tackling all 3 of the filtration methods as well as the importance of proper water movement. Each section will discuss the benefits and disadvantages of the stock method verses the various other upgrades that are available.Chapter 1: Mechanical FiltrationFilter Cartridge:
When I make reference to mechanical filtration in regards to the filter cartridge I am only referring to the filter floss (not the carbon).Problem:
The filter cartridge does a fine job at removing particles from the water column, however it has 2 serious flaws. As the floss becomes dirty the organic particles begin to break down and lower your water quality. The solution, replacing the cartridge every few days, is simple but brings about the second problem. At $3 a pop the money you spend on cartridges is going to really add up over the lifetime of your biocube. That money would be better spent on tank upgrades---or beer.Solution:
The solution to this one is simple, and cheap (the best kind). All you need is a bag of filter floss (100% pure polyester fiber, basically its just pillow stuffing).
This is what I use, it costs next to nothing and lasts a really long time.
The goal is to place the floss in a place where all the water is going to be forced through.
The grate over chamber 2 works perfect!
All you need is a small amount of floss.
And thats it you did it! In 2-3 days it will get dirty and you can just throw it in the garbage and add a new handful.
Edited by uwwmatt, 12 April 2009 - 04:27 PM.