Interesting, thank you. I have a jar that I am doing the same exercise in. it's only been set up for 2 weeks but so far so good. I'm going to try your feeding approach :)
Any quick update on how the project is progressing? I love the idea of growing the daphnia in a jar with plants rather than in bucket tucked in a corner like others do. How is this method coming along? Is it sustainable? Do you get good growth? How is maintenance? Thanks!
Well I have found that the best way to keep it going is to keep the population low by constantly removing daphnia and feeding to my community tank but the population does grow so fast!
@@elvirarivera8598You can but daphnia thrive in green water so they're kinda difficult to observe in their ideal environment. They're also adapted to a boom-and-bust population cycle, a lot like brine shrimp or triops, so expect to find that daphnia will have a population explosion then a subsequent collapse and then you'll need to intervene to restart the colony except under the circumstances where you're carefully maintaining the colony.
@elvirarivera8598 I kept Daphnia as pets during most of my late childhood through my adolescence. The problem with this, as Jesse pointed out, is that unless you reduce their population regularly, they overpopulate, then crash. Of the 2 commonly raised species of Daphnia, Daphnia magna thrives best on algae, but Daphnia pulex thrives best on bacteria, particularly coliform bacteria. 😖As raising Daphnia on Spirulina powder is much more hygenic, this is the preferred method today. Magna averages larger than pulex when reared under optimal conditions, but both species vary greatly between populations and under different environmental conditions. During my childhood, I could easily collect D. pulex from temporary ponds in my area, and a horse trail near my home was a convenient source for "fertilizer" for my Daphnia cultures. Dried Cow manure was widely sold for horticultural use, and worked very well for rearing Daphnia. Daphnia pulex reared with dried manure (only very small amounts are required) were readily visible as the water remained clear (but pale tea colored) if not overfertilized. In those days, Spirulina powder for Human use didn't exist. Through the 1960s, live fish food dealers in the NE US raised a very large strain of D. pulex that had very clear shells and if properly maintained, laid huge numbers of green eggs in their brood chamber. I haven't seen D. pulex like these in over 40 years anywhere. They were really beautiful viewed against a sunny window. Daphnia populations that are stressed by any combination of metabolite buildup in their water, pH drops, overcrowding, and excessively high average temperatures begin producing males (thriving populations are usually 100% female) and ephippeal eggs. These resting eggs are recognizable in the females' brood chamber as individual large black entities vs the multiple green parthenogenic eggs carried by females in thriving colonies. These resting eggs often but not always require a cool or cold period before they hatch. Ideally, a Daphnia culturist won't see them at all. Brine Shrimp (Artemia salina) are potentially much longer lived than Daphnia, and their graceful swimming propelled by rhythmic coordinated movements of their phyllopods is more relaxing to watch than the hopping movements of Daphnia. Artemia are much larger than Daphnia, and are sold as pets under the names of "Sea Monkeys" and "Aqua Dragons". They feed primarily on Dunaliella algae in most habitats (including sea salt evaporation ponds), rather than bacteria. I haven't tried rearing them on Spirulina powder, but as they are unselective filter feeders, this should work well. They are tolerant of a much wider temperature range than Daphnia, but require much higher pH levels to thrive. If you don't mind dealing with salt spray and salt creep, they can be better pets than Daphnia. With food care, Artemia can live for 8 to 10 months. Don't overlook freshwater amphipods (scuds) as pets! They swim in multiple ways, are easily observed without magnification, and live for about a year with good care. Your can collect Hyalella azteca from most unpolluted ponds and lakes with underwater plant growth in North America, or buy them. There are lots of videos here on how to raise them.
This is very informative to culture daphnia. I do have some question, isn’t that daphnia eat algae? What if you don’t do water change and let algae growth for their food source and doesn’t feed them yeast? Will that work in your opinion?
I heard to not use an air stone like that since the small bubbles can get trapped in the carapace of the daphnia leading to their death since they will just float to the top. Also, is this daphnia magna? Theyre harder to breed so congrats if you managed to get a colony going
I read about that risk but the air bubbles alone without the stone were super big and loud lol so I’ve been keeping an eye on them and I they seem to be doing fine I haven’t seen any of them stuck at the top yet. I don’t keep the air on all day just for about 2 hours a day so maybe that helps. And I’m not sure! I ordered them off Amazon the seller only referred to them as “water daphnia“ lol
I couldn’t help but feel for the daphnia when you fed them slowly to the fish. They seemed to squirm away from the opening 🙈 I would have just toss them in
Man. I had quite a bit of daphnia, but ended up dieing. I do have some left in my fry grow out tank. In the main tank though...all dead. Maybe the water wasn't aged enough.
Daphnia are extremely sensitive to phosphates which act as a trigger, low they reproduce like crazy which will quickly raise phosphates through waste so large water changes at least once a week are essential. I've found adding air stones helps them reproduce quickly but isn't necessary and that they will reproduce faster with a diet of spirulina and yeast (2 part yeast 1 spirulina by volume) rather than a green water culture.
Daphnia are intolerant of nitrites specifically. They can tolerate ammonia and nitrates, however. You might have had a nitrite spike that killed off the colony but the other commenter is right about their sensitivity to phosphates as well.
@@ryanboscoe9670Did you fertilize your green water culture? If you don't, I wonder if that (or a lack of light) might be putting a ceiling on the rate of growth that the green water culture is capable of.
Plants consume oxygen at dark time... You want to feed daphnia, ok, but how to feed it with plants? I have same plants, and they became polluted by yeest or green culture leftovers. I don't feed more comparing to your amounts
definitely need oxygen, but shouldn't use an airstone, the small bubbles can cause oxygen to get trapped under their carapace, and then they float, cant swim or eat and die at surface, use a weighted hose or a rigid air line
This is so informative! Great job, fantastic reporting!🌻🌼🐝 Keep it up 🙌
Thank you!! 😁
Really lovely music and effect, the video is great!
I love your videos, the editing is very high quality for your amount of videos and I was wondering what you use to film for your videos.
Thanks! just my iPhone with a macro lens clip on!
Interesting, thank you. I have a jar that I am doing the same exercise in. it's only been set up for 2 weeks but so far so good. I'm going to try your feeding approach :)
Let me know how it goes! Still working well for me so far🤞
@@JarsAndTanks will do
Any quick update on how the project is progressing? I love the idea of growing the daphnia in a jar with plants rather than in bucket tucked in a corner like others do. How is this method coming along? Is it sustainable? Do you get good growth? How is maintenance? Thanks!
Well I have found that the best way to keep it going is to keep the population low by constantly removing daphnia and feeding to my community tank but the population does grow so fast!
@@JarsAndTanks Can you keep daphina not as food and as pets?
@@elvirarivera8598You can but daphnia thrive in green water so they're kinda difficult to observe in their ideal environment. They're also adapted to a boom-and-bust population cycle, a lot like brine shrimp or triops, so expect to find that daphnia will have a population explosion then a subsequent collapse and then you'll need to intervene to restart the colony except under the circumstances where you're carefully maintaining the colony.
@elvirarivera8598 I kept Daphnia as pets during most of my late childhood through my adolescence. The problem with this, as Jesse pointed out, is that unless you reduce their population regularly, they overpopulate, then crash.
Of the 2 commonly raised species of Daphnia, Daphnia magna thrives best on algae, but Daphnia pulex thrives best on bacteria, particularly coliform bacteria. 😖As raising Daphnia on Spirulina powder is much more hygenic, this is the preferred method today. Magna averages larger than pulex when reared under optimal conditions, but both species vary greatly between populations and under different environmental conditions.
During my childhood, I could easily collect D. pulex from temporary ponds in my area, and a horse trail near my home was a convenient source for "fertilizer" for my Daphnia cultures. Dried Cow manure was widely sold for horticultural use, and worked very well for rearing Daphnia. Daphnia pulex reared with dried manure (only very small amounts are required) were readily visible as the water remained clear (but pale tea colored) if not overfertilized. In those days, Spirulina powder for Human use didn't exist.
Through the 1960s, live fish food dealers in the NE US raised a very large strain of D. pulex that had very clear shells and if properly maintained, laid huge numbers of green eggs in their brood chamber. I haven't seen D. pulex like these in over 40 years anywhere. They were really beautiful viewed against a sunny window.
Daphnia populations that are stressed by any combination of metabolite buildup in their water, pH drops, overcrowding, and excessively high average temperatures begin producing males (thriving populations are usually 100% female) and ephippeal eggs. These resting eggs are recognizable in the females' brood chamber as individual large black entities vs the multiple green parthenogenic eggs carried by females in thriving colonies. These resting eggs often but not always require a cool or cold period before they hatch. Ideally, a Daphnia culturist won't see them at all.
Brine Shrimp (Artemia salina) are potentially much longer lived than Daphnia, and their graceful swimming propelled by rhythmic coordinated movements of their phyllopods is more relaxing to watch than the hopping movements of Daphnia. Artemia are much larger than Daphnia, and are sold as pets under the names of "Sea Monkeys" and "Aqua Dragons". They feed primarily on Dunaliella algae in most habitats (including sea salt evaporation ponds), rather than bacteria. I haven't tried rearing them on Spirulina powder, but as they are unselective filter feeders, this should work well. They are tolerant of a much wider temperature range than Daphnia, but require much higher pH levels to thrive. If you don't mind dealing with salt spray and salt creep, they can be better pets than Daphnia. With food care, Artemia can live for 8 to 10 months.
Don't overlook freshwater amphipods (scuds) as pets! They swim in multiple ways, are easily observed without magnification, and live for about a year with good care. Your can collect Hyalella azteca from most unpolluted ponds and lakes with underwater plant growth in North America, or buy them. There are lots of videos here on how to raise them.
Nice video, keep the updates rolling! 😎👍
Neat!
Thanks!
nice vid
Thank you!
Purrple cat... I love Purrple cat.
Nice vid! How do you do water changes without losing a bunch of daphnia?
This is very informative to culture daphnia. I do have some question, isn’t that daphnia eat algae? What if you don’t do water change and let algae growth for their food source and doesn’t feed them yeast? Will that work in your opinion?
If they are not fed directly I would expect a large die off of the daphnia, it may balance out eventually but in much smaller numbers of daphnia
@@JarsAndTanks that actually make sense. Thanks bro
do you use substrate for your cultiur? Or bare bottom only? Wanna know cause wanna try it too
Very nice video. I have more precise an idea on how to proceed for my own daphnia culture.
Just a quick question: did you measure water parameters?
Thank you!! Not since adding the daphnia, so I’m overdue for a parameter check!
what species is that worm on the glass jar in the left upper quadrant (shifts to middle of screen) at 1:56
Hey, awesome work first of all. Second? What size is that jar? I was looking at 1 gallons but this looks a bit bigger.. let me know pleaseeeeee
I heard to not use an air stone like that since the small bubbles can get trapped in the carapace of the daphnia leading to their death since they will just float to the top. Also, is this daphnia magna? Theyre harder to breed so congrats if you managed to get a colony going
I read about that risk but the air bubbles alone without the stone were super big and loud lol so I’ve been keeping an eye on them and I they seem to be doing fine I haven’t seen any of them stuck at the top yet. I don’t keep the air on all day just for about 2 hours a day so maybe that helps. And I’m not sure! I ordered them off Amazon the seller only referred to them as “water daphnia“ lol
What. size glass is that?
The dashboard jar would be a good place to keep guppy fry if you don't have any other place👍
Hi, nice video. I have a question. How many time do you change the water?
I couldn’t help but feel for the daphnia when you fed them slowly to the fish. They seemed to squirm away from the opening 🙈 I would have just toss them in
Is this jar self-sustaining or do you have to clean and maintain it like an aquarium?
I feed the daphnia and then I feed the daphnia to my community tank so it’s not a self sustaining ecosystem
@@JarsAndTanks You don't have to do water changes or vacuums though?
I would like to grow them for my fish and to keep as little pets.
Man. I had quite a bit of daphnia, but ended up dieing. I do have some left in my fry grow out tank. In the main tank though...all dead. Maybe the water wasn't aged enough.
That could be! If you have an aquarium try using water from there!
Daphnia are extremely sensitive to phosphates which act as a trigger, low they reproduce like crazy which will quickly raise phosphates through waste so large water changes at least once a week are essential. I've found adding air stones helps them reproduce quickly but isn't necessary and that they will reproduce faster with a diet of spirulina and yeast (2 part yeast 1 spirulina by volume) rather than a green water culture.
Daphnia are intolerant of nitrites specifically. They can tolerate ammonia and nitrates, however. You might have had a nitrite spike that killed off the colony but the other commenter is right about their sensitivity to phosphates as well.
@@ryanboscoe9670Did you fertilize your green water culture?
If you don't, I wonder if that (or a lack of light) might be putting a ceiling on the rate of growth that the green water culture is capable of.
@@ryanboscoe9670how do you water change without sucking them all up?
so u never change water?
You were just teasing the fish.
Release the daphnia’s in the stream of water and you will be surprised how good hunters become.
i like the content buut the editing on this vid is painfully slow at times
All my daphnia suddenly died overnight in my Jar :(
😢
Plants consume oxygen at dark time...
You want to feed daphnia, ok, but how to feed it with plants? I have same plants, and they became polluted by yeest or green culture leftovers. I don't feed more comparing to your amounts
definitely need oxygen, but shouldn't use an airstone, the small bubbles can cause oxygen to get trapped under their carapace, and then they float, cant swim or eat and die at surface, use a weighted hose or a rigid air line