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Re: Aquatic Plants Digest V1 #385
paul Bucciaglia writes:
>
>do you have any ideas on why many people (ie Dupla users) can get
>good results without additional N (other than fish food).
The German style aquariums tend to have few fish and hence little N or P
added thru fish food. One reason that the tanks may not have excess P and
become N limited can be their water. This is purely speculative. I believe
that my own tap water contains a ppm or so of N (not counting the ammonia
added to form chloramines) and non measureable P. This is according to the
water plant. ALthough I have asked Kevin and Paul, I have never asked may
water people about min detects.<g>
With frequent water changes, it is possible to continue to add N and dilute P.
Neil Frank, TAG editor Aquatic Gardeners Association Raleigh, NC USA