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Re: Aquatic Plants Digest V1 #2
>
>Aquatic Plants Digest Thursday, 6 April 1995 Volume 01 : Number 002
>
>In this issue:
>
> Crypt rot
>
>See the end of the digest for information on subscribing to the
>Aquatic Plants mailing list and on how to retrieve back issues.
>
>----------------------------------------------------------------------
>
>From: Erik Olson <olson at phys_washington.edu>
>Date: Thu, 6 Apr 1995 08:23:06 -0700 (PDT)
>Subject: Crypt rot
>
>What excellent timing, Shaji. And thanks for putting the effort into
>this new list!
>
>I have a bunch of Cryptocoryne sp. (probably wendtii or lutea) in my 45
>gallon heavily planted aquaria (see, for instance,
>http://marge.phys.washington.edu/fish/Plants/People/Olson/ for full
>desctiption). The tank has heating cables, CO2, and 160 watts of fluorescent
>lighting. Starting about 2-3 weeks ago, virtually ALL of the brown "wendtii"
>began to melt; I went on vacation and now that I'm back it's completely gone
>except for a few newer shoots. More of the green "lutea" seems to have
>survived, planted in the same area & mixed with the brown "wendii".
>
>Here are some things I have changed to the tank that might have brought
>this on:
>
> * Removed a lot of pygmy chain swords and replaced them with 3 species of
>Anubias about a month ago.
>
> * Uprooted lizard's tail (Saururus).
>
> * Added 2 or 3 rhizomes of Crypt pondetifolia (sp?) in another part of the
>tank.
>
> * Added several bunches of Ammania sp.
>
> * Added an Echinodorus osiris (which was doing well initially but has
> seemingly stopped now).
>
> * Lowered tank temperature 80-75 F approx. TWO months ago.
>
>What has NOT changed much is nitrate level, which I've checked weekly. I
>also do regular water changes of 4-8 gallons per week or two.
>
>So... I would like to learn more about Crypt rot. Is this a seasonal
>thing, perhaps triggered by changes in our water? Is it a reaction to
>other plants? Given my situation, I don't think it's due to a change in
>macronutrient level (which most of the books suggest) as that's been pretty
>constant. I have noticed in the past that SOME of the crop will die out
>and come back, but I've never had such a mass suicide as this.
>
> - Erik
>
>- ---
>Erik D. Olson The Job-o-meter:
>olson at phys_washington.edu stand by...
>
>
>
>------------------------------
>
>End of Aquatic Plants Digest V1 #2
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Hi Eric:
A few minutes ago we got two copies of this Digest. We are very glad to be
on the mailing list, but please fix whatever caused us to get two instead of
one copy.
Thank you,
Ted