whatever amount of ammonia is being converted into nitrite, is being immediately converted into nitrate.... the situation you have is the ammonia production on a daily basis is too much for the level of bacteria you currently have in your filter.... this can be for three reasons -
more time is needed for the bacteria to build up
insufficient suitable media surface area for the amount of bacteria needed
too fast flow of water - bacteria need time to convert the ammonia....
Check the water is not bypassing the media in the filter, check the flow rate coming out of the filter (fill a jug of water from the outlet and work out how long it takes to fill 1litre)
avoid using products that contain dyes like malachite green and methylene blue, and dont over dose the water conditioner/ammonia converters too much.
maintain the pH at around 7.0 (not less than 6.5) and KH at or above 20ppm
stop feeding the fish for over a week, and then only feed frozen food every few days ( = more water and less protein)
that is all you can do ...... and then wait.
just checking...... you have removed the filter material in the eheim from the plastic bags? - have to ask - seen it before....
Edited by Mr_docfish, 21 January 2011 - 09:38 PM.