[font="Trebuchet MS][b]Sources of Bacteria[/b] [/font]
[font="Trebuchet MS]While it is probable that the bacteria required for the conversion of ammonia and nitrite to nitrate exist at very low levels in most uncycled tanks, it greatly accelerates the process to inoculate the tank with a large dose of healthy bacteria to get things started. Good sources of beneficial bacteria are ranked from best to least: [/font]
[list=1][font="Trebuchet MS][*] Filter material (floss, sponge, biowheel, etc.) from an established, disease-free tank.[*] Live plants (preferably potted, leave the rockwool on until cycling is finished). Crypts or amazon swords are good choices, and not too demanding.[*] Gravel from an established, disease-free tank. (Many lfs [local fish stores] will give this away if asked nicely.)[*] Other ornaments (driftwood, rocks, etc.) from an established tank.[*] Squeezings from a filter sponge (any lfs should be willing to do this...)[/font][/list][/quote]
From [url="http
/malawicichlids.com/mw01017.htm"]http
/malawicichlids.com/mw01017.htm[/url]
And filling a tank with plants would help. Just putting in a mass of floaters would help.
Another misconception is that simply adding a sponge or additional filter to an established tank creates more bacteria. It does not. What it will do is spread out the ones that are there. Since a filter normally offers the best home for bacteria to live and multiply, new space is inviting. While the size of a bacterial colony in a tank may remain constant, the individual bacterium do not. They are continually dying and reproducing. Some will end up in new media and colonize it, but then you will have fewer in the original filter. The size of the colony tends to size to the bio-load over time. The only way to get more bacteria is to have more ammonia available.
That is why one needs to be careful not to remove too much filter media from and established tank to seed a new one. It can cause spikes in the original tank if one does. Even when short lived, it will not do the fish any good.