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CRYPTS -STEVE IS RIGHT!
Aquatic Plants Digest wrote:
>
> Aquatic Plants Digest Monday, May 11 1998 Volume 03 : Number 258
>
> In this issue:
>
> Crypts enjoy strong light too
> Re: Iron tests
> Re: Aquatic Plants Digest V3 #257
> Update on substrate w/bubbles
> Re: Funny little Green Things
> Copper sulfate
> whitey needle valve
>
> See the end of the digest for information on unsubscribing from the
> Aquatic Plants mailing list and on how to retrieve back issues.
>
> ----------------------------------------------------------------------
>
> Date: Mon, 11 May 1998 00:43:58 -0700
> From: Steve Pushak <teban at powersonic_bc.ca>
> Subject: Crypts enjoy strong light too
>
> Recently someone said that Crypts prefer low lighting. This is not true.
> They are able to tolerate relatively low lighting but like all aquatic
> plants, they will grow MUCH better given good STRONG lighting and proper
> nutrients.
>
> Steve
> I have 12 sp. of crypts and even at 8-10 watts/gal they do great.Some change color,get curly leaves,and look quite different at these light levels.I have found only a couple that don't like this much light
Tom> ------------------------------
>
> Date: Mon, 11 May 1998 09:37:51 -0400 (EDT)
> From: Paul Sears <psears at nrn1_NRCan.gc.ca>
> Subject: Re: Iron tests
>
> I tried to respond to personal e-mail on this, but the reply
> bounced. I hope that "Tom Wood" is reading the APD today!
>
> > Subject: Chelated iron and test kits - sorry to bug you with this
> >
> > Hi Paul,
> >
> > I've been trying to search the APD archives for this and can't find
> the
> > answer. Both LaMotte and Hach tech guys say their iron test kits
> don't
> > test for chelated iron. When trying to modulate the iron level when
> doing
> > the PMDD thing, what is the 0.1 ppm
> >
> > measure a measure OF?
> >
> That's a good question. I think that the test kits will probably give
> an
> immediate reading for the free iron, and an indication of the total if
> left
> for a long time. Trying to measure low concentrations of something like
> that will not be an easy task, particularly with simple test kit
> methods.
>
> > If I use their test kits to set the iron level at 0.1 ppm, is this
> some
> > kind of proxy for actual iron levels, and I can still rely on the
> tests,
> > or are the tests completely useless?
> >
> I think what most people (including myself) do is to go for "just
> detectable" iron, and not worry about the actual amount. Biological
> systems
> are pretty tolerant of variations in concentrations of most elements,
> but
> one does have to be concerned about overdosing.
>
> I hope that is of some help.
>
>
> - --
> Paul Sears Ottawa, Canada
>
> ------------------------------
>
> Date: Mon, 11 May 1998 07:45:09 -0700
> From: Dave Gomberg <gomberg at wcf_com>
> Subject: Re: Aquatic Plants Digest V3 #257
>
> At 03:48 AM 5/11/1998 -0400, Earle Hamilton wrote:
> > Volvox colonies have been
> >well described and they are about the size of wolfia but they float in
> >the water. They are not nearly as bright a green as the wolfia and the
> >two are as different as you could imagine. The original requestor for
> >i.d. could clarify by telling us if the stuff is floating or not.
>
> OK, more details. This stuff floats, sometimes as single blobs, but more
> often as clusters of 2-8 blobs and occasionally as tiny rafts of 10-20.
> Always on the surface, never in mid-water. The outside appears glistening,
> like a polysaccharide of some sort, so I would doubt it is ciliated. That
> would rule out Volvox???? And there does not appear to be any structure
> (stems, leaves, roots) so that would rule out Wolfia, right???? Each
> 300-500u oval blob appears to be a cluster of 50 or so largish cells, with
> a slime coat. Does that sound familiar to anyone?
>
> - --
> Dave Gomberg mailto:gomberg at wcf_com
> FormMaestro <http://www.wcf.com>
> - -----------------------------------------------------------------
>
> ------------------------------
>
> Date: Mon, 11 May 1998 11:09:24 -0400
> From: "Alysoun McLaughlin" <alysoun.mclaughlin at ncsl_org>
> Subject: Update on substrate w/bubbles
>
> The bubbles don't stink of methane (there's no smell that I can detect), and
> a friend of mine (was a chemistry major) doesn't believe that any byproducts
> of anaerobic breakdown would be both toxic and water-soluble.
>
> I'm going to ignore the problem, unless someone tells me otherwise...
>
> ------------------------------
>
> Date: Mon, 11 May 98 10:30:40 cst
> From: mark.fisher at tpwd_state.tx.us
> Subject: Re: Funny little Green Things
>
> Here are some images of Volvox:
> http://202.250.194.136/WWW/PDB/Images/Chlorophyta/Volvox/index.html
>
> and here are some images of Wolffia:
> http://www.palomar.edu/Wayne/genimg2.htm#wolffia
>
> from Dave's descriptions it sounds like Volvox to me.
>
> Regards,
>
> Mark
>
> ------------------------------
>
> Date: Mon, 11 May 1998 10:39:14 -0500
> From: David Soh <dsoh at iastate_edu>
> Subject: Copper sulfate
>
> APD members,
> I have a 90 gal. planted tank that's beginning to be overrun by what I
> think is brush algae. It has been about 4 years since it was set up. And i
> tried using reagent grade CuSO4 to eradicate the algae with about 1/4
> teaspoon of it. Bad idea. Some of the more sensitive fishes and some spiral
> vals died. So i changed about 80% of the water. My next plan is to move all
> the fishes to another tank and and try it again with CuSo4 and shut down
> the lights for a week. Anyone knows of the right dose to use CuSO4. It is
> the next best thing to totally tear down the tank. Any suggestions or
> advices will be well appreciated. I don't care if some of the more
> sensitive plants die as i have some reserves in my other tanks or is this
> plan a little drastic ? TIA.
>
> ------------------------------
>
> Date: Mon, 11 May 1998 15:05:21 -0400
> From: "Barry Barlow" <bbarlow at camcomp_com>
> Subject: whitey needle valve
>
> Hi list,
>
> I need a little help on needle valves, the only one I can find in my
> area(south Georgia) is a Whitey model B21R54 with a metering range of .0005
> to wide open at .007 it will also shut completely off. Does any one have any
> experience with this valve? The valve is brass and cost 86.80 setup foe 1/4
> inch OD tubing is this a good price and the right size?
>
> Also what is a good bubble counter and where can I get one?
>
> Thanks,
> Barry Barlow
> bbarlow at camcomp_com
>
> ------------------------------
>
> End of Aquatic Plants Digest V3 #258
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