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Re: Aquatic Plants Digest V3 #138
-----Original Message-----
From: Aquatic Plants Digest <Aquatic-Plants-Owner at actwin_com>
To: Aquatic-Plants at actwin_com <Aquatic-Plants at actwin_com>
Date: Saturday, March 14, 1998 7:59 PM
Subject: Aquatic Plants Digest V3 #138
>
>Aquatic Plants Digest Saturday, March 14 1998 Volume 03 : Number
138
>
>
>
>In this issue:
>
> DIY Metal Halide System
> Re: Nuphar Water Lilly
> Trace element mix, shrimp, green water
> One more question: EDTA
> Tampa Pet Trade Show
> Re: Emersed plants, continued
> Re: Aquatic Plants Digest V3 #137
> Re: Aquatic Plants Digest V3 #137
> "Ghost" Shrimp
> Re: Green Light
>
>See the end of the digest for information on unsubscribing from the
>Aquatic Plants mailing list and on how to retrieve back issues.
>
>----------------------------------------------------------------------
>
>Date: Fri, 13 Mar 1998 20:54:50 -0000
>From: "A M Moore" <andy at ascot_u-net.com>
>Subject: DIY Metal Halide System
>
>Hi all,
>
>I want to put together a DIY Metal Halide system to upgrade my German
>Mercury Vapour (German) system.
>
>Can anyone advise me EXACTLY what I should use ? Systems in the UK cost a
>small fortune so I want to save a little money and design a better system
>than perhaps I could buy.
>
>I know I will need: ballast, wire, pendant, bulb (175 watt 5500K)
>
>What would you go for ??
>
>Thanks !
>andy at ascot_u-net.com
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 16:21:40 -0500
>From: "Merrill Cohen" <amc2 at ix_netcom.com>
>Subject: Re: Nuphar Water Lilly
>
>Erik wrote:
>
>Going off-topic with that last paragraph, I would totally love to see
>a grower or hobbyist sell pond lily (Nuphar) reproduced from seed, as
>opposed to the ridiculous "lopped-off" tubers that rot away and die
>within 3 months. I'd pay real money for that.
>
>Eric -- You would probably have to wait a long time to get blooms, but try
>Slocum Water Gardens in Florida. He's great at pond lilliies and might
>even have some reproduced from seed. The family has been culturing lillies
>for many years and Peter Slocum is respected as an authority on lillies.
>He's in Winter Haven, FL - phone (941) 293-7151 and has a catalog.
>
>Good luck.
>
>Merrill
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 17:20:58 -0600
>From: "Chetlen R. Crossnoe" <cc691077 at bcm_tmc.edu>
>Subject: Trace element mix, shrimp, green water
>
>Hi all,
>
>I've been saving up questions for a while to ask all at once. Here goes:
>
>1. I'm trying to find some trace element mix for making PMDD. I found
>some stuff here in Houston called Peters STEM (soluble trace element mix).
>It has pretty much the same ingredients as most of the other trace element
>mixes I've heard of here and at the Krib, except the Cu concentration is
>2.3% -- about 20 times what was in the mix in the original Sears & Conlin
>paper. (This is relative to a Fe concetration of 7.5%, BTW.)
>
>I know that at high concentrations copper can be toxic. Is this amount
>likely to be harmful?
>
>2. Apparently the shrimp like Amano uses are making the rounds here in the
>US; I just got some locally (at Village Tropical, for you Houstonians).
>These are the larger shrimp, not bee shrimp (I think -- haven't nailed down
>the scientific name). Anyway, I put four in my 30 gal and six in my 55.
>The ones in the 55 have been quite active, swimming around and eating
>stuff. There's no obvious dent in the algae yet, but there's a heck of a
>lot of it in there, probably much more than 6 shrimp can handle. In the
>30, however, I've hardly seen hide nor hair of them, and when I do see them
>they are quite still. Not dead, apparently, because they don't stay in the
>same spot.
>
>The big difference in the two is that while the 55 has quite clear water,
>the 30 is in a window and has pretty bad green water. Does anyone know if
>some shrimp are filter feeders? Maybe they have enough food from the water
>not to have to scrounge for algae.
>
>3) Speaking of green water, I heard on this list at one point that someone
>tried putting daphnia in the tank, inside a very fine-mesh net, in order to
>clear the water. Does this work?
>
>Thanks,
>
>Chetlen
>
>
>- -------------------------------------------------------------------------
--
>Chetlen Crossnoe
>Baylor College of Medicine
>Structural and Computational Biology and Molecular Biophysics
>cc691077 at bcm_tmc.edu
>- -------------------------------------------------------------------------
--
>"The gods themselves are not for ever glad. The ineffaceable, sad
>birthmark in the brow of man, is but the stamp of sorrow in the signers."
> --Melville
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 17:23:08 -0600
>From: "Chetlen R. Crossnoe" <cc691077 at bcm_tmc.edu>
>Subject: One more question: EDTA
>
>Hi again,
>
>Oh yeah, one more question. The trace element mix I got is apparently not
>chelated, so I need to add EDTA (which I have access to) when I make the
>solution. Does anyone have any idea how much?
>
>Chetlen
>
>
>- -------------------------------------------------------------------------
--
>Chetlen Crossnoe
>Baylor College of Medicine
>Structural and Computational Biology and Molecular Biophysics
>cc691077 at bcm_tmc.edu
>- -------------------------------------------------------------------------
--
>"The gods themselves are not for ever glad. The ineffaceable, sad
>birthmark in the brow of man, is but the stamp of sorrow in the signers."
> --Melville
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 07:31:40 -0600
>From: Cynthia S Powers <cyn at metronet_com>
>Subject: Tampa Pet Trade Show
>
>FORWARDED MESSAGE:
>
>>Date: Wed, 11 Mar 1998 21:10:20 -0500
>>From: Doug Valverde <75051.160 at compuserve_com>
>>
>>This coming weekend, beginning Thursday March 12, there will be live
>>coverage of the annual Tampa Pet Trade Show. Coverage will be as follows:
>>
>>The "Pets Spring Fling" will be open to anyone who has Internet access and
>>Windows '95.
>>
>>The current schedule of events include the following -
>>
>>Thursday, 9 pm EST - Slide presentation by Roy Herndon of Sea Critters on
>>"Collectinve Marinelife in the Florida Keys."
>>
>>Friday, 7 pm EST - Live from the Florida Aquarium - A slide presentation
>>about one of America's newest world-class aquariums.
>>
>>Saturday 10 am - 6 pm EST - Live from the Tampa Pet Trade Show - The
>>PetsForum Group will be hosting a "live" CyberCafe in the middle of the
Pet
>>Industry Distributors Association Trade Show from the Tampa Convention
>>Center. Each hour will feature the latest in dog, cat, bird, and aquarium
>>products as well as interviews with leading pet industry representatives.
>>
>>Saturday 8 pm EST - World famous fish explorer Heiko Bleher will present a
>>slide show about last year's "FishNet Explore '97" expedition into an
>>unexplored region of the Brazilan rain forest.
>>
>>Sunday 10 am - 3 pm EST - Live from the Florida Tropical Fish Farmers
>>Association fish show. The PetsForum Group will be hosting another "live"
>>CyberCafe from this mega fish show. Photos will be presented of the
>>winning show entries along with interviews of popular fish experts who
stop
>>by.
>>
>>Sunday 3 pm - 4 pm EST - EKKWill Waterlife Resources will present a slide
>>show tour of Florida's largest tropical fish farm.
>>
>>All of these events will be held in state-of-the-art CompuServe Conference
>>Center.
>>
>>For more information about these events and the latest scheduling
>>information visit URL <www.petsforum.com/springfling/>.
>>
>>
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 19:28:50 EST
>From: Deansliger <Deansliger at aol_com>
>Subject: Re: Emersed plants, continued
>
><< Most of the Echinodorous, plants like Anubias, Cryptocoryne, Tennullus,
> Hair Grass and even some stem plants are grown out of water.
> No CO2 injection, just sunlight and fertiliser, that's all the plants
> seem to need. >>
>
>That's not surprising since these growing conditions best represent that
>natural habit of these species -- as opposed to being grown submerged in 2+
>feet of water for an indefinite time.
>
>Some people mentioned Alteranthera sessilis and A. reineckii. I've been
>combing through botanical literature for years trying to find some
reference
>that any Alteranthera species -- along with "Mondo Grass" (Ophiopogon
>japonicus), and a few others -- has any association with water in nature.
So
>far there's been nothing. Not so much as a mention of "found near streams"
or
>"inhabits wet meadows" -- nothing. The only thing that can really be said
is
>that these species endure our unnatural method of cultivation. Much in the
>same was as the Dracaenas and other such plants often found stuck into
>aquariums.
>
>By the same token, I've never jumped onto the "Amano bandwagon" because in
>every photograph of his I've ever seen, despite the constant use of the
words
>"nature" and "natural," all I ever see are plant species subjected to the
most
>unnatural growing conditions. Yes, the tanks are quite pretty, but
"natural?"
>Hardly.
>
>Dean Sliger
>Deansliger at aol_com
>
>
>
>
>
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 18:39:16 -0700 (MST)
>From: "Roger S. Miller" <rgrmill at rt66_com>
>Subject: Re: Aquatic Plants Digest V3 #137
>
>On Fri, 13 Mar 1998, Dr. Dave wrote:
>
>>
>> Plants can utilize green light for photosynthesis. This occurs because,
>> even though chlorophyll does not absorb green light, accessory pigments
>> do. The energy captured by the accessory pigments is then magically
>> transferred to the applicable photosystem. Take a look at Barry James'
>> book on P. 21 and you will clearly see what Im talking about.
>>
>
>I have a few plant books, but not that one.
>
>Do you have a sense for how common that adaptation is? My understanding
>is that most plants show so little response to green light (~530 nm) that
>it is called "safelight" in plant growth research. The researcher can
>work by it, but the plants show minimal response to it.
>
>Whatley and Whatley's "Light and Plant Life" is a nice (but slightly old)
>discussion on the response of plants to different wavelengths of light.
>
>
>Roger Miller
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 22:53:01 EST
>From: Conwayte <Conwayte at aol_com>
>Subject: Re: Aquatic Plants Digest V3 #137
>
>Anyone know why a pH of 6.0 would be harmful to shrimp?
>They are thriving in my Flourite tank with a pH 6.8, but die in a couple
>of days in my Hartz pH 5 tank, water pH of 6.0
>
>Another statistically flawed observation is that the salvinia in the
>Hartz tank is smaller than the Salvinia in the Flourite tank, and the
>water lettuce grows better (leaves last longer, reproduce faster) in the
>Hartz tank vs the Flourite tank.
>
>And to further confuse matters, the Dupla laterite-CO2 injected tank
>grows duckweed much faster than the other two, where the duckweed is
>barely noticable, but the Salvinia and Water lettuce barely grow. (no
>shrimp in the laterite tank)
>
>Tim
>
>------------------------------
>
>Date: Fri, 13 Mar 1998 21:38:25 -0800 (PST)
>From: "A. Inniss" <andrewi at u_washington.edu>
>Subject: "Ghost" Shrimp
>
> Okay, so I think we're talking about the same shrimp. Out here
>(in Seattle) they're not commonly sold as feeder items, and you'll be
>lucky to get them for under a buck. Still, I should have mentioned that I
>have had this shrimp, had them breeding in one of my tanks for a while,
>and yes, they are decent algae eaters. Unfortunately, their life-span is
>rather short, and they don't eat red algae. I'm hoping that the Yamato
>numa-ebi will at least live longer, and also that it will eat red algae.
>I'm also hoping to breed them ;-).
>
> Andrew
>
>
>~^~
> ~
>
>------------------------------
>
>Date: Sat, 14 Mar 1998 16:44:17 +1000
>From: David Aiken <d.aiken at eis_net.au>
>Subject: Re: Green Light
>
>On 14/3/98 Dave wrote:
>>
>>Plants can utilize green light for photosynthesis. This occurs because,
>>even though chlorophyll does not absorb green light, accessory pigments
>>do. The energy captured by the accessory pigments is then magically
>>transferred to the applicable photosystem. Take a look at Barry James'
>>book on P. 21 and you will clearly see what Im talking about.
>>
>I can accept it all except for the "magically" at the end of line 3. <g>
>
>David Aiken
>
>------------------------------
>
>End of Aquatic Plants Digest V3 #138
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