Which LFS still selling live daphnia aka boon??

[Bern C]

@Bern C
Keeping goldfish in green water is not a bad thing.
Only humans like crystal clear aquarium water, and they assume that fish also like it.
Healthy green water is a good water state which is healthy for aquatic life.

Yeah... XD Now I desperate for easy green water while others desperate to remove them. XD I am looking for ponds that has unlimited uncontaminated green water which I can get FOC. I believe some of my copepod came from the contaminated green water sample.

Low yield usually crashes after a week. Never had a high yield one before but my last culture was in a plastic tub with some Tubifex worms and a few Ramshorn Snails. The worms were fed with commercially available fish food, usually a sinking wafer but never lasted long since plastic tubs are not exactly the best containers for culturing them. That attempt lasted roughly 2 weeks before I noticed all the remaining Moina were dead, along with the Ramshorns. Something about the plasticisers and lubricants used on the plastic during the molding process. If you have a used tub, that previously had fish and still has algae growing on the sides, that would be the perfect plastic container to culture these tiny morsels. For water changes go with distilled water like what the shrimpers do. A lot less headache and risk.

Last time we used to make the "food" with dried chicken poop lol... smells bad but the tiny fellas liked it. If your fertiliser has Copper then you will have issues with Moina. They are sensitive to metals in the water and our tap water is not exactly conducive for them. In the past I actually tried using this bottled Fiji brand water and it worked for awhile . I did not keep the Moina long enough to see whether it was to their requirements or not.

In your green water culture containers you should have a source of aeration going on, just to keep the sediment in suspension. Not too strong though. Green water itself is basically Euglena, which in itself is a zooplankton but with the capability of photosynthesis. Something useful here for you to read: http://www.aka.org/wako/~WebContent/Articles/culturing%20euglena.html

The easiest is still using a single juvenile goldfish, like what tetrakid mentioned, in a decent sized tank with simple filtration. Place it close to a window or something, feed the goldfish every day and do not change the water too often. Once the nitrates start to build up the green water will come naturally or via an inoculation from your existing cultures. If you don't like goldfish use Tilapia. Same results.

I think the best is glass container or plastic aquarium. I currently tried plastic container from daiso and lucky it do works though after washing I can find that the surface is super slippy which at first I suspect there might be a layer of by-products.

When I just started, I though that Moina is very sensitive as it crashed in days then 1 week. But later I realized the main killers are overpopulation and overfeeding. I stopped using mineral water or distilled water as I realized that they able to survive on Osim u2pure filtered water. XD I thinking of using tap water next. But I not sure if it will affect the reproduction or not.

=( But I don't have tank and probably very troublesome for me to setup the aeration. So kinda cruel to keep them in small container w/o aeration so this option is out. I currently have 2 bottle under led and aeration but w/o the box. The other 2 under outdoor sunlight. @_@ But the result isn't so good, take like weeks to get green.

Now have successful setup 2month long very low yield sustainable culture. Now I planning to setup fast yield but kinda waste lot of water method. Like start from small container then after a week, change to a bigger container with fresh water and bigger and so on till like 5-10gallon tank then restart from step one again.

Do you think it's a good idea to get some phytoplankton culture online?? But the small sample cost quite some $$. =(

BTW do you wanna try some pulex culture? But I can only provide you small starter only as my culture is limited. Currently only have like 100 pulex only

[fireblade]

I have green water but no daphnia to try..

[stormhawk]

@Bern

It is just not worth it to buy the phytoplankton thing into Singapore. Most of the sellers are located in the US and it takes roughly 2 weeks for any package to get here, unless you feel rich and want it in less than a week. IMO, just too expensive to even consider. Thank you for the D. pulex offer but I lack space right now so all my live food cultures are for the time being, gone.

If you want something easier to handle compared to Moina and just as good for your fish, try the Dero worms from Urban or find a grindal worm seller. These grindals love our climate and they are easy to maintain. Only problem is, just as easy to forget about them. One of my cultures crashed because I overfed the worms with fish food. Now all gone.

For what it's worth, the only live food I ever successfully shipped in from overseas was a set of microworms, bananaworms and walterworms. 3 different sizes of really puny worms, great for tiny fry. Problem was, the cultures exploded within a day or two from subculture and in our heat, they just boom in numbers. Unfortunately, their nutrition value is not really good as a primary food source, except for the first 2-3 days for a typical fish fry.

[Bern C]

I have green water but no daphnia to try..

XD Can I trade 20 Adult pulex + some babies for your 500ml of green water??

@Bern

It is just not worth it to buy the phytoplankton thing into Singapore. Most of the sellers are located in the US and it takes roughly 2 weeks for any package to get here, unless you feel rich and want it in less than a week. IMO, just too expensive to even consider. Thank you for the D. pulex offer but I lack space right now so all my live food cultures are for the time being, gone.

If you want something easier to handle compared to Moina and just as good for your fish, try the Dero worms from Urban or find a grindal worm seller. These grindals love our climate and they are easy to maintain. Only problem is, just as easy to forget about them. One of my cultures crashed because I overfed the worms with fish food. Now all gone.

For what it's worth, the only live food I ever successfully shipped in from overseas was a set of microworms, bananaworms and walterworms. 3 different sizes of really puny worms, great for tiny fry. Problem was, the cultures exploded within a day or two from subculture and in our heat, they just boom in numbers. Unfortunately, their nutrition value is not really good as a primary food source, except for the first 2-3 days for a typical fish fry.

That is what I am thinking also and worry that the phytoplankton culture isn't doing well. Actually I have Dero but XD My dero worms culture crashed too due to my negligent. Hahaha.. Too focus on pulex. Ytd I have fished out some of my Dero from my 2g tank and going to start a small culture. I doubt I will culture them together with Daphnia as it going to crash with my plan and make my water change more troublesome. I find that my pulex are more prolific than Dero but now the problem is some dying adult + some young. Pulex needs 4-8 days to reach it max size.

No problem and feel free to PM me if you want some Pulex. Thanks for all your valuable knowledge, ^_^ Will look into other worms once I am done with my Daphnia culture.

[fireblade]

think I can supply you 20 litres of green water only problem is place of collection

XD Can I trade 20 Adult pulex + some babies for your 500ml of green water??



That is what I am thinking also and worry that the phytoplankton culture isn't doing well. Actually I have Dero but XD My dero worms culture crashed too due to my negligent. Hahaha.. Too focus on pulex. Ytd I have fished out some of my Dero from my 2g tank and going to start a small culture. I doubt I will culture them together with Daphnia as it going to crash with my plan and make my water change more troublesome. I find that my pulex are more prolific than Dero but now the problem is some dying adult + some young. Pulex needs 4-8 days to reach it max size.

No problem and feel free to PM me if you want some Pulex. Thanks for all your valuable knowledge, ^_^ Will look into other worms once I am done with my Daphnia culture.

[Bern C]

think I can supply you 20 litres of green water only problem is place of collection

XD 20L too much. I think 1.5L will do. I can go collect from you. XD but my problem is time of collection as I only available on fri & weekend. The rest of the days will be after 10pm or morning. @_@

[fireblade]

where are you located?
the time that you mentioned are good for me.
after 10pm is good for me too!

[tetrakid]

I have green water but no daphnia to try..

If you need some Daphnia, you should try and get a packet from C328, Seaview, etc.

[fireblade]

C328 sells Daphina?
went many times , they only have BBS...

[tetrakid]

XD 20L too much. I think 1.5L will do. I can go collect from you....

If you are culturing green water algae you must first ensure your culture tank water supports their survival.
If not, they will quickly die off after you pour the sample in. Green water algae does not simply multiply. They also need suitable water conditions.

[tetrakid]

C328 sells Daphina?
went many times , they only have BBS...

They have boon but only on some days. Better call them and confirm before going.
As you know, boon supplies are quite hard to maintain.

[tetrakid]

... Will look into other worms once I am done with my Daphnia culture.

If you succeed, you can just rely on supplying Daphnia for a living. Live Daphnia is much coveted by fish-keepers to pamper their beloved pets.

[Bern C]

where are you located?
the time that you mentioned are good for me.
after 10pm is good for me too!

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??

If you are culturing green water algae you must first ensure your culture tank water supports their survival.
If not, they will quickly die off after you pour the sample in. Green water algae does not simply multiply. They also need suitable water conditions.

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

[fireblade]

my tank water is always green green this is a less than 1 feet tank.. and cannot see the bottom.. :P

[Bern C]

That is really yummy green.

[tetrakid]

... I will separate the culture and try it with tap water 1st.

It might not work with new tap water for culturing green water algae. Better to start with some old aquarium water.
Also, it is not a good idea to experiment Daphnia with tap water. It will never work.
Daphnia are well known for their sensitivity, hence they are also used by water authorities to detect impurities, contaminants, etc.

[tetrakid]

That is really yummy green.

Yes, your aim must be to develop a tank like that in order to sustain your Daphnia culture indefinitely.
Previously, I had used 10x Rosy Barbs kept in very green water too.

[fireblade]

must have constant sunlight...
my smallest guppy tank with only some monte carlo inside have green water after 2 days of 100% water change...

[Bern C]

It might not work with new tap water for culturing green water algae. Better to start with some old aquarium water.
Also, it is not a good idea to experiment Daphnia with tap water. It will never work.
Daphnia are well known for their sensitivity, hence they are also used by water authorities to detect impurities, contaminants, etc.

XD I tried culture Moina in tap water before and they managed to survive. I think the amount of chlorine and impurities in my tap water are too small to kill them but maybe affect their reproduction initially??

I am not using my tank water due to contamination. @_@ Can use but gotta filter it. I will try 1 bottle of tap water then another bottle of filtered water and see the result.
XD I really have no luck in green water. I overfed and didn't WC for weeks but don't recall I have green water before but wall algae.

[tetrakid]

XD I really have no luck in green water. I overfed and didn't WC for weeks but don't recall I have green water before but wall algae.

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.