Which LFS still selling live daphnia aka boon??

[tetrakid]

Previously, I had used 10x Rosy Barbs kept in very green water too.

I forgot to mention that I had fed those fish in the green water tank with Tubifex.

[Bern C]

First, the water condition must be ready for green water algae. Then only introduce a starter culture of the said algae, but not before that.
If you just introduce a culture sample into water which is not 'up to standard', the green water algae will simply die instead of propagating.
Sufficient nitrates is required, but other factors are also needed. It is a delicate balance. Even after green water is produced, there is also
the need to ensure that it (the green water algae) doesn't crash.

Also, for Daphnia culturing, before going into further experimentation, it is absolutely necessary to stick to fundamentals principles first.
Like never use raw tap water, no matter how impressed you are with it.

Also, culturing Daphnia calls for even more stringent water control than for fish. Measuring all water parameters is even more critical than for keeping fish.
Thus, culturing Daphnia is extremely demanding in terms of knowledge and technique.

The expense of a comprehensive water testing kit is a must for cultivating these adorable "sea elephants".
I am not into culturing Daphnia, but just offering my 2 cents worth of views. Hope it helps.

I remembering reading it's all due to the nutrients ratio NPK. XD Need to do more research about it. Also it must not be contaminated by bacteria else will get brown water or something. @_@

Yeah, absolutely agree with you. And also patient too... Daphnia reproduction is fast but need longer time to upsize compare to Moina. Magna or Russian Red should be worst.
XD I am trying their hardiness actually also trying increase their hardiness so maybe can have a strong strain of Daphnia. I usually will add some unfiltered tap water into the fed mixture.



Update on my cultures:

Mini Tank X - Day 22
Longest running culture that I hatched them from the eggs. This tank is getting messy and invaded by copepod. I'm going to reset this tank once it reach a month old. Will separate the adults from the contamination to start another culture.

Mini Tank Y - Day 7
Started this culture on 19/07/15 due to the contamination of my Mini Tank X. Started with 10 Pulex.

The last culture is babies of my failed 2 gallon tank which contaminated with Ostracod & Copepod. I segregated and quarantined the adults of my 2 gallon tank and will do it again to this culture till I free the Pulex from contamination.




XD My Daphnia Hatchery is really messy now. Yeah... I think I am right about the byproduct of yeast increasing the growth of the algae and biofilm on the wall that trap my Daphnia. Hair algae is growing on the wall now.

[tetrakid]

I remembering reading it's all due to the nutrients ratio NPK. XD Need to do more research about it. Also it must not be contaminated by bacteria else will get brown water or something. @_@

....XD I am trying their hardiness actually also trying increase their hardiness so maybe can have a strong strain of Daphnia. I usually will add some unfiltered tap water into the fed mixture.

Update on my cultures:

Mini Tank X - Day 22
Longest running culture that I hatched them from the eggs. This tank is getting messy and invaded by copepod. I'm going to reset this tank once it reach a month old. Will separate the adults from the contamination to start another culture.
Mini Tank Y - Day 7
Started this culture on 19/07/15 due to the contamination of my Mini Tank X. Started with 10 Pulex.
The last culture is babies of my failed 2 gallon tank which contaminated with Ostracod & Copepod. I segregated and quarantined the adults of my 2 gallon tank and will do it again to this culture till I free the Pulex from contamination.

XD My Daphnia Hatchery is really messy now. Yeah... I think I am right about the byproduct of yeast increasing the growth of the algae and biofilm on the wall that trap my Daphnia. Hair algae is growing on the wall now.

It's all a worthwhile adventure, Bern.

[Bern C]

It's all a worthwhile adventure, Bern.

XD I am like crazy culturer... trying all kind of weird stuff. =X On the process of making super daphnian soldiers.


Here's my 1st update on my non-airtight container:

An experiment on Daphnia Pulex in a non aerated and non-airtight covered container.
Started this culture on 19/07/15 with 20 Daphnia. It seem like they're able to do well in a low air exchange container. They started to produce more Hemoglobin in 1-3 days time. I saw a population increase on the 3rd days onward.

[Bern C]

I edited the vid and here's the new vid.

[fireblade]

sorry missed out this posting..
I stay near Tiong Bahru MRT..
Actually I am not very sure if they are contaminated... that is my betta fry water...
whether you are still interested or not, please let me know as I might be changing their water totally soon...

Near Central; Whampoa. What about you? XD Don't tell me it's west.
Is your green water contaminated with zooplankton like ostracod or copepod??



Noted. Thanks for your tips. ^_^ I will separate the culture and try it with tap water 1st.

[tetrakid]

sorry missed out this posting..
I stay near Tiong Bahru MRT..
Actually I am not very sure if they are contaminated... that is my betta fry water...
whether you are still interested or not, please let me know as I might be changing their water totally soon...

@Bern C
I suggest you get the green water sample from @fireblade and try it out for experience, as it may not be easy to get another sample.

[Bern C]

sorry missed out this posting..
I stay near Tiong Bahru MRT..
Actually I am not very sure if they are contaminated... that is my betta fry water...
whether you are still interested or not, please let me know as I might be changing their water totally soon...

@Bern C
I suggest you get the green water sample from @fireblade and try it out for experience, as it may not be easy to get another sample.

^_^ Yeah I am still interested. I will just filter and quarantine them for a while before using so shouldn't be a issue.
Can I meet you on Friday anytime from 2pm to 7pm(or later also can.. I will just go walk walk) as I am going Bt Merah for some errands.

[fireblade]

Bern C, I have PM you.

how long can green water last in a sealed container?
if can last , I can siphon the water out the night before and then put in a container.

[tetrakid]

Bern C, I have PM you.

how long can green water last in a sealed container?
if can last , I can siphon the water out the night before and then put in a container.

The algae should be able to survive for a couple of days in the same water.
A 1.5L (drinking water/mineral water bottle) or 2L (milk) bottle should be okay.

[Bern C]

Bern C, I have PM you.

how long can green water last in a sealed container?
if can last , I can siphon the water out the night before and then put in a container.

The algae should be able to survive for a couple of days in the same water.
A 1.5L (drinking water/mineral water bottle) or 2L (milk) bottle should be okay.

Yeah... they can survive in a sealed bottle as they do respire. ^_^ Many thanks for your green water.

@fireblade,
XD Your mailbox full so I will reply here: "Ok... Sure."

[fireblade]

green water for my plants.. :P

[Bern C]

WOW!!!!!! That's lot of green water. Rich for your plants. You decomm your betta fry tank??

[fireblade]

no that was water change few days ago from my angels tank.. that is from a 2 feet tank only.

[Bern C]

no that was water change few days ago from my angels tank.. that is from a 2 feet tank only.

@_@ I want a 2 feet green water tank too. Do purposely make the water green?? XD May I know what's your water parameter, lighting wattage & fertilizer used??

[tetrakid]

Try putting your tank with some fish in good daylight or outdoors (no need for tank lighting).
A $3 packet of feeder fish of guppies or goldfish will do nicely. Feed them frequently every day, preferably with tubifex.
With good constant sunlight light, the water will naturally be green, especially with some Euglena culture sample present.
There must be fish in the tank. Without fish it is not likely to work. This may be news but fish love to live in green water.

[fireblade]

actually I don't want the green water... but it keep appearing certain time of the year when light shine into the room..

No fertilizer used inside got a few big angels, sponge filter, not sure about water perimeters, water change once every week or fortnight, one T5 4 feet light across 4 tanks, so about 1 feet of light is used on this tank....

[fireblade]

hehe this thread has diverted lots... maybe should change the title..

[Bern C]

Try putting your tank with some fish in good daylight or outdoors (no need for tank lighting).
A $3 packet of feeder fish of guppies or goldfish will do nicely. Feed them frequently every day, preferably with tubifex.
With good constant sunlight light, the water will naturally be green, especially with some Euglena culture sample present.
There must be fish in the tank. Without fish it is not likely to work. This may be news but fish love to live in green water.

XD I think I know why I failed to get green water. I used to have a guppy 2.5g tank exposed to late after/evening lights and w/o WC for weeks. Most probably the fast growing plants are absorbing the excess nutrients. The only algae I see is on my substrate.

actually I don't want the green water... but it keep appearing certain time of the year when light shine into the room..

No fertilizer used inside got a few big angels, sponge filter, not sure about water perimeters, water change once every week or fortnight, one T5 4 feet light across 4 tanks, so about 1 feet of light is used on this tank....

Oh... I think it's the excess light + nutrient causing the green water. XD Will look into it.

hehe this thread has diverted lots... maybe should change the title..

Hahaha.. Change to "Daphnian Culturer" but no title changing function. =(

[fireblade]

my little betta tank , no extra light and no special things added and it just green up..