about filtration  - somewhat under construction

Lets place this is basic terms. The filters that we make or purchase for our ponds and aquariums are there to create an area where good bacteria can make their home, after a set time when anything natural is introduced into these environments.

The good bacteria are given scientific names, but for the purpose of my site, I shall try and keep it simple. These good bacteria assist in the breakdown of waste in the water. The waste produced by fish especially include nitrite and ammonia, both deadly to fish in very low quantities. The good bacteria that are brought into existence early in the stage of filtration will detoxify the nitrite and ammonia to nitrate. Nitrate concentrations are less deadlier in the water, but will become deadly if no water changes are performed. Put simply, the filtration is there to clean the water by biological means.

It would be great to read up on the nitrogen cycle at this point. You may find references either in my links, online, or in your encyclopedia.