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#76 |
Moved On
Join Date: Sep 2004
Location: ontario
Posts: 1,104
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Sorry for the mix up Im not trying to culture pyhto in a mixed culture Im thinking about having a multiple zooplanton culture system. As most of you already know brime shrimp need good oxygen concentration to grow. How fast will a skimmer remove phyto, does anybody really know the answer to that question. Can you give some kind of study link or reference. Everybodyusing DT's is just pouring money down the drain if its that true.
Copepods don't eat just one thing they also eat diatoms and dirt maybe even bacteria. |
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#77 |
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Join Date: Oct 2002
Location: Calhoun, Mo. USA
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Sorry for the mix up Im not trying to culture pyhto in a mixed culture Im thinking about having a multiple zooplanton culture system. aha well thatll work fine then, you just need to screen the overflows so that nothing good goes down them.
As most of you already know brime shrimp need good oxygen concentration to grow. uuh, brine shrimp dont need good anything to grow, including oxygen, there is 2 low numbers one where they change what they eat and how fast they breed its around 3ppm and one where they croak around 1ppm How fast will a skimmer remove phyto, does anybody really know the answer to that question. the only problem with the answer is really a problem with the quesiton, look at the protein skimmers available commercially, are you really comparing an euro-reef with a seaclone??? also look at the flow rate vs volume if it takes 20 minutes for a single phyto cell to make its way to the skimmer to be removed, there is a good chance that a copepod or something might find it and eat it. and once that happens then its chances of being pulled are lower. Can you give some kind of study link or reference. search around the DR Ron forum there is one in there Everybodyusing DT's is just pouring money down the drain if its that true. no it gets back to that volume thing, and the amount of DT's thing, they are pouring some money down yea, but how much, and at what benefit if its not eaten eventually itll settle and decompose, decomposing in the skimmer collection cup provides no nutrient excess to the tank, decomposing in the tank does. Copepods don't eat just one thing they also eat diatoms and dirt maybe even bacteria. my empty head isnt seeing anything that says they only eat one thing so if im not following that part point it out. but more or less diatoms are algae, i dont know of any copepod that eats dirt. bacteria consumption is secondary to algae.
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#78 |
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Join Date: Jan 2002
Location: Independence, Iowa
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Just a side note on the DT's and other commercial phytos. Most of those bottles address the damage and removal, by pumps and filters, factor by telling customers to shut off all pumps and skimmers for a period of 15 minutes while feeding their product. This does allow the animals time to ingest a good portion of the product, but yes the reminants will be partially skimmed or destroyed when the system is turned back on, but it is a gradual dilution issue like RSMan stated not an immeadiate removal.
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#79 |
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Join Date: Oct 2002
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gradual dilution issue like RSMan stated not an immeadiate removal
yea but that sounds better ![]()
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#80 | |
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Join Date: Mar 2000
Location: Calgary alberta canada
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here is a very good reference from the united nations no less here is the table of contents
Quote:
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Cheers MitchMc There is more than one way to skin a cat or skim a tank...."Infinite diversity in infinite combinations" |
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#81 |
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Join Date: Mar 2000
Location: Calgary alberta canada
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!@#$%^%$^%&*^%$ double post
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Cheers MitchMc There is more than one way to skin a cat or skim a tank...."Infinite diversity in infinite combinations" |
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#82 |
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Join Date: Oct 2002
Location: Calhoun, Mo. USA
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I thought the FAO link was in here already, but even if its not, now all we need are those to be hyperlinks
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#83 | |
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Quote:
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#84 |
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Join Date: Jul 2005
Location: Columbia, MD
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I have noticed in every phytoplankton culture I have ever seen the 2 liter bottles are always right side up... Is there merit to the idea of keeping the bottles upside down with air coming in through the bottlecap to prevent phytos or whatever from settling into the bottle? If the air is all the way at the bottom of the bottle (cap end, when upside down) it seems as though it would work.?? Any thoughts....
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#85 |
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Join Date: Oct 2002
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it works but not without problems,
if you feed air from the bottom then you have airline that will be exposed to algae, this is a bad thing, but an inverted 2l bottle with an air hole in 1 ?lobe? and an exit hole in the other works great. but then you have to keep it upright which can also be done.
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#86 |
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Join Date: Jan 2002
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You have the right idea, but I believe you will create more problems than it is worth, as settling phyto really is not that big of an issue if you shake the bottles every once in awhile.
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#87 |
Reefer
Join Date: Feb 2001
Location: FL EAST COAST
Posts: 517
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Bugger, you mean detritus not dirt. Hapacticoid do eat a lot of detritus, but the pelagic species don't. There are huge differences between the group. The reason why tanks normally have good population of hapacticoids is that they are benthic and almost never leave the substrate or they don't venture very far, and have benthic or semi-benthic nauplii. This on reason they are mostly worthless for culturing fish. The other is that they are nowhere near nutritious as most calanoids and cyclopoids.
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#88 |
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Location: San Dimas, CA
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I have a question on copepods. When I start raising rotifers again I think I will also try copepods, now is it possible to aclimate the copepods to a 1.014 salinity and breed them in my rotifer tank? Thanks
David
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#89 |
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Join Date: May 2005
Location: Sacramento
Posts: 662
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Hi all,
I am planning to start culturing phytoplankton and would like to know if there is a hardware store like lowes or home depot that sell the rigid tubing? Also, I read one of the article and it mentioned that the size for the rigid tubing is 1/8", is this correct? Thanks |
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#90 |
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Join Date: Oct 2002
Location: Calhoun, Mo. USA
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I wouldnt limit yourself to 1/8" tubing this isnt so much incorrect as its just too generic. 1/2" pvc is rigid heavy and can have 1/8" holes drilled into it very easily.
now where to get it, most plastic places will have it.
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#91 | |
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Quote:
![]() Yes it is possible to acclimate pods to 1.014 or 1.010.In fact many estuarine species do better at low salinities.
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Luis A M Current Tank Info: I keep about 40 tanks,for breeding and larval raising.Most are 10 gallons. |
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#92 | |
Premium Member
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Location: Buenos Aires,Argentina
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Quote:
![]() Yes it is possible to acclimate pods to 1.014 or 1.010.In fact many estuarine species do better at low salinities.
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Luis A M Current Tank Info: I keep about 40 tanks,for breeding and larval raising.Most are 10 gallons. |
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#93 |
Reefer
Join Date: Feb 2001
Location: FL EAST COAST
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But you can't really co-rear them with rotifers.
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#94 | |
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Quote:
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Gresham _______________________________ Feeding your reef...one polyp at a time |
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#95 |
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Location: Buenos Aires,Argentina
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Andy is right.A successful pod culture must be kept rot free
![]() Rotifers will quickly take the culture and are very difficult to erradicate
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Luis A M Current Tank Info: I keep about 40 tanks,for breeding and larval raising.Most are 10 gallons. |
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#96 |
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Join Date: Nov 2004
Location: Location, Location; (Montréal)
Posts: 247
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little_d:
Go to a dollar store, look among the party supplies. Find the balloons, and select a package that has the long straws for holding the balloons. Presto! Rigid airline tubing! ![]() (Probably food safe, considering that this stuff is aimed at kids. ![]() |
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#97 |
Registered Member
Join Date: Nov 2005
Location: Yuma, Az
Posts: 568
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Ridged tubeing
Where do I get the ridged tubeing to culture phytoplanktin?
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#98 |
Moved On
Join Date: Mar 2004
Posts: 3,249
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petco and petsmart have airline tubing
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#99 |
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Join Date: Sep 2004
Posts: 96
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Hi Expert please help,
what kind method to increase the density or concentration of phyto, heard used the lugol solution is it right or any other pls? thanks 'reevs'
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#100 |
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Join Date: May 2004
Location: Nashville, TN
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I see that there are different strains of Rotifers. S and ss. Does anyone know what strain Brachionus plicatilis might be. It is at Sachs Systems aquaculture.
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