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Aquatic Plants Digest V1 #179
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To: Aquatic-Plants at actwin_com
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Subject: Aquatic Plants Digest V1 #179
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From: glen at harlie_pps.com (Glen Osterhout)
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Date: Thu, 13 Jul 95 09:32:59 EDT
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>Date: 12 Jul 95 17:10:36 EDT
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>From: Jayme Donnelly <Jayme_Donnelly%BOND__NOTES at notes_worldcom.com>
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>Subject: blue-green algae (Causes and Cures)
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Cc: Aquatic-Plants at actwin_com
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In-Reply-To: Aquatic-Plants-Owner at actwin_com's message of Thu, 13 Jul 1995 03:39:07 -0400 <199507130739.DAA26402 at looney_actwin.com>
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>I wouldn't become overly alarmed and "freak," but then again, I would
>take this seriously. The appearance of Blue-Green Algae means
>that something is wrong in your conditions in either the water quality
>(conditions) or lighting.
I have experienced severe outbreaks of blue-green algae (cyanobacteria) under
the following conditions:
- Nitrates less than 10 ppm (heavily planted, with co2)
- 160 watts of fluorescent light (tritons and ultratrilux)
I don't have a phosphate test, so it is possible I had a problem in that
area, but basically I don't agree that it is as simple as water quality or
lighting. It seems that certain conditions help it get a foothold, but
once established it just takes over. Erythromycin will take care of it,
but I haven't found a sure way of preventing it.