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./filtration

Contents:

1. (M)(R)Why do trickle filters increase nitrate?
   by steve/rhythm.com (Steve Tyree) (Mon, 29 Mar 1993)
2. [M] Filtration Articles in TFH
   by gt6441c/prism.gatech.EDU ( Jon Edwards ) (16 Feb 92)

(M)(R)Why do trickle filters increase nitrate?

by steve/rhythm.com (Steve Tyree)
Date: Mon, 29 Mar 1993
Newsgroup: rec.aquaria

In article <C4no88.K7K-at-ra.nrl.navy.mil> tse-at-ra.nrl.navy.mil (Anthony Tse) writes:

->   Try taking out your x-nitrate.  If the nitrate rise, then yanking
->the bio-ball will save you on x-nitrate.  Otherwise, I guess you
->can keep them.  I argued along the same line you did for over
->a year -- TF doesn't do anything good, and anything bad, I was wrong,
->it does something bad.

I still do not think that raising the nitrate to lower the nitrate is a
good idea for me. The fact that trickle filters produce nitrates is a
known mechanism. That brings up my reef methodology. It is called a
"Turbid Coralline Reef". Lots of water motion is used on a heavily
coralline encrusted reef with lots of protein skimming. Weekly water
changes are performed to remove detritus from the front collection
areas. This is done to try to duplicate the reef crest or peak of reef
mounts. No substrate. I have also stopped using ozone. The questions
I have now, are based on using this reef methodology.

  - Will heavily coralline encrusted live rock be able to function
    adequately as a natural filter. (ie-will nitrate breakdown occur
    within the rocks even though coralline is encrusting the exterior)
    If this process is limited by coralline encrustation, than xnitrate
    bags might be required anyway. This also could eliminate the pro-
    ximatey arguement for not using plastic bio-media.

  - Is a pressurized oxygen reactor needed to keep dissolved oxygen
    ppm close to saturation?


 Steve Tyree - Reef Breeder

[M] Filtration Articles in TFH

by gt6441c/prism.gatech.EDU ( Jon Edwards )
Date: 16 Feb 92
Newsgroup: rec.aquaria

In article <1992Feb16.092203.12325-at-cco.caltech.edu> laurence-at-cco.caltech.edu (Dustin Lee Laurence) writes:
>gt6441c-at-prism.gatech.EDU ( Jon Edwards ) writes:
>
>>In article <14FEB199213363706-at-venus.lerc.nasa.gov> fssmith-at-venus.lerc.nasa.gov (Greg Smith) writes:
>>>Yes it is possible to run a tank with only a skimmer IF it is big enough.
>
>It seems to be difficult to get information on the hobby in other
>countries, but I get the impression that the skimmer (as opposed to
>trickle filter) method is the prefered method in some places in Europe.
>Perhaps someone has more concrete information on this?
>
In the Jan. issue of FAMA, there is a little blurb on the "Berlin School" of
reef keeping in Reef Notes by Julian Sprung.  They DON'T use W/D's at all.
They put the live rock in, let it cure, and that's that.  They DO use a 
good bit of mechanical filtration and lots of protein skimming.  

The article also says that in the Netherlands W/D's are very popular, where
they like lots of plant growth in their reef aquariums.  The author does
state that W/D's are still used by many in Germany and all over Europe...

The article was very interesting.  Seems like both systems work, but W/D's
are prone to produce more nitrates.

Disclaimer : I am only saying what I read in this article, and have little
reef keeping experience myself.  

Jon

-- 
Jon Edwards                                   gt6441c-at-prism.gatech.edu 
Georgia Institute of Technology    
  "we're just two lost souls swimmin' in a fishbowl, year after year"  
                                                       -Pink Floyd

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