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- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!magnus.acs.ohio-state.edu!usenet.ins.cwru.edu!agate!boulder!ucsu!fido.Colorado.EDU!nagel
- From: nagel@ucsu.Colorado.EDU (Kurt Nagel)
- Subject: Re: [M] Cycling - Month 4
- Message-ID: <1992Nov22.012229.16514@ucsu.Colorado.EDU>
- Sender: news@ucsu.Colorado.EDU (USENET News System)
- Nntp-Posting-Host: fido.colorado.edu
- Organization: University of Colorado, Boulder
- References: <1992Nov18.175444.23284@pixel.kodak.com> <1992Nov19.073829.3094@ucsu.Colorado.EDU> <1992Nov20.234148.1713@attain.icd.teradyne.com>
- Date: Sun, 22 Nov 1992 01:22:29 GMT
- Lines: 57
-
- brian@picasso.icd.teradyne.com (Brian Hunter) writes:
-
- >In article <1992Nov19.073829.3094@ucsu.Colorado.EDU> nagel@ucsu.Colorado.EDU (Kurt Nagel) writes:
- >>wieser@bissun.kodak.com (Jim Wieser) writes:
- >>
- >>>About a month into things, the brown diatoms showed up. They were quickly
- >>>replaced with mainly purple algae although some bright green algae also
- >>>showed up. The purple algae hasn't gone away.
- >>
- >>I had a similar problem. In my case, the local experts explained that the
- >>purple stuff is not actually an algae but is much more voracious than green
- >>algae, so it takes over. It is most likely due to metal content in your water. The solution was as follows:
-
- >Where did you hear this about metals?
-
- This was from the local marine experts. Apparently the red bacteria survives
- better in an environment where heavy metals are present. Although as you
- have correctly pointed out, metal content is not essential.
-
- >> most of your biological filter. Monitor your nitrates
- >I think you meant nitites here. Although if the dead algae is not
- >removed it will certainly result in nitrates as well.
-
- No, I did mean nitrates. Mine went off the scale and this was after removing
- the major portion of dead red stuff.
-
- >> religiously and perform frequent water changes until
- >> the system stabilizes.
-
- >This is not necessary true. I have used maracyn several times and never
- >seen any problem with the filter. In another recent post on this subject
- >it was thought that this may be worse in fresh water that salt.
-
- It is not the maracyn that was the problem. The red stuff WAS performing the
- majority of my biological filtration before I killed it. What I meant by the
- warning was that your biological elements need to replace the dominant red
- stuff.
-
- >>
- >> My tank was completely cured. Remember what I said about water
- >>changes and nitrates. I had to battle a hair algae problem after the
- >>purple crud because I didn't keep my nitrates down.
-
- >I have found (and in articles seen it confirmed) that the cyano bacteria
- >leave behind spores that will lie about for a week or two and then
- >?germenate? and start the problem over. This will require a second
- >treatment. I have also seen it recommended that a treatment last 2 weeks
- >however I prefer a second pass over the prolonged treatment.
- Yes,
- I was warned that I might have to treat again. However, I have not
- had a re-occurence since treating 3 months ago.
- >Brian Hunter
- Kurt
- nagel@fido.colorado.edu
-
-
-
-