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- Path: sparky!uunet!usc!nic.csu.net!csus.edu!netcom.com!netcomsv!attain!picasso.icd.teradyne.com!brian
- Newsgroups: rec.aquaria
- Subject: Re: [M] Cycling - Month 4
- Message-ID: <1992Nov20.234148.1713@attain.icd.teradyne.com>
- From: brian@picasso.icd.teradyne.com (Brian Hunter)
- Date: Fri, 20 Nov 1992 23:41:48 GMT
- Sender: usenet@attain.icd.teradyne.com
- References: <1992Nov18.175444.23284@pixel.kodak.com> <1992Nov19.073829.3094@ucsu.Colorado.EDU>
- Organization: Teradyne, Inc. San Jose CA
- Nntp-Posting-Host: picasso.icd.teradyne.com
- Lines: 55
-
- 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?
- Usually the 'red algae' or cyano bacteria is introduced and does well.
- A high organic level in the water seems to promote it but once it takes
- hold good water quality won't necessaryly get rid of it.
-
- >
- > 1. Remove all carbon/chemical filtration (They will extract the
- > medication)
- > 2. Apply a half dose of maricyn (An antibiotic) on day 1
- > 3. Apply a half dose of maricyn on day 2
- > 4. The purple stuff should begin to die back within a few days
- > If not apply another half dose of marycin (NO MORE)
- > 5. After die back begins, vacuum main body of crud and change
- > about 20% of the water.
- > 6. After a bout a week (As long as die back is happening) replace
- > filtration. Use either Polyfilter or Chemi-pure (These will
- > extract metals where most filter materials will not)
- > 7. IMPORTANT: After the red/purple stuff dies, you will have lost
- > 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.
-
- > 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.
-
- >
- > 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.
-
- Brian Hunter
-
-
-
-