[Prev][Next][Index]
Need for filtration in planted tanks
While reading Steve's instructions on growing Ellodea, I had a few
thoughts about need for filtration in heavily planted tanks. In
particular, it seems to me that filtration may not always be such a
good thing after all. According to my understanding of the N-cycle,
fish produce predominantly ammonia --- which is also what the plants
prefer. A biological filter then forces the bacteria to compete for
ammonia with the plants, which is not a good thing. So it seems to me
that it is better to leave it up to the plants to remove the ammonia and
only remove the nitrates with water changes.
I have a tank which has been running in this way for abot half year
now. The tank is about 40 l and started with a few fancy guppies
and a few corscrew vals. There is no filtration, no areation and no
CO2 and the tank is lit by a single 11W fluo light. Usually I do one
large water change 20-30% and often one small change 10% each week.
Currently, the tank has a heavy load of guppies and lots of plants -
both seem to do well and multiply even further.
Comments? Suggestions?
Jan
Jan Fidrmuc
CentER for Economic Research
Tilburg University
P.O.Box 90153
5000 LE Tilburg,
The Netherlands
Phone: +31-13-466-2678, +31-13-466-8221
Fax: +31-13-466-3066
Email: J.Fidrmuc at KUB_NL
http://cwis.kub.nl/~few5/center/phd_stud/fidrmuc/home.HTM