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Old 01-09-2008, 08:52 PM   #1
dr.tran
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Culturing Tubifex and Blackworms


I was asked by another forum to write about how I cultured these worms. I didn't want it to be limited to just one forum so I hope this information can help someone here too.

I am sorry if this is not the right place to put it. But its was the closest I can get to inverts

Anyway I have been culturing blackworms and tubifex worms for years and its been a long journey to learn to culture them when I first started, there wasn't much information let alone on the web about culturing them at home. I guess it wasn't worth it.

And after all this, I don't think worth all the work to do. However, I have no local access anymore to blackworms or tubifex so I have no choice but to.

After I found out my LFS was closing down and it was the only one selling any live foods, I scrambled and tried so many methods to culture them. I only had a month to do so.

So I learned from trial and error. First step is to keep them alive. Lucky from years of buying, I learned the can be kept in the fridge. Blackworms longer than tubifex. As long as the water is clean and declorinated, it can surive for at least a week.

Blackworms much longer. My record was 1 month 2 weeks. Not sure if it could go any longer, my fish needed to eat.

So I got lots of worms from my LFS before the closed and I got to work. I couldn't culture any in the fridge so i kept them in a fish bowl.

Lesson 1: Do not let the temp reach higher than 80 or you may have a massive die off. It seems best around 75 degrees or so. In the summer time, find a cool area in the house. I like to place them in a bucket, and put it in my backyard underneth a tree. The shade keeps them cool.

Lesson 2: Only keep them in cycled containers. It doesn't matter if you are keeping them in a 10 gal tank or a rubbermaid but it must be cycled if it is placed in room temperture. I learned that the hard way many times over. Even in temporay holding trays.

So now that we know the general guide lines of keeping them alive, lets move on to housing and care.

Lesson 3: Always change the water. The water must be changed daily. at least once every 2 days. Every day to be better. I change about 30 percent for blackworms and 20 percent for tubifex. More if the water looks or smells bad. You will smell it if the culture goes bad. I found that the drip aclimator is the best for water changes and has become a permenent fixture in my worm tanks. Just let it siphon out the amount and pour in old aquarium water.

Lesson 4. Blackworms like the water to be shallow. They can live in deeper water but they always seem to do best in shallow water. No more than 5 inches. For tubifex it doesn't seem to matter. Also they can be kept in small containers but I find 5 gallon tanks to be the best. The water quality is more stable in there than a rubbermaid. Also I keep one major culture going and a few smaller ones for insurance.

Lesson 5. What is the medium to keep them in? That is a hard question to answer. It is all about how much labor you want to put in. At first, I put gravel on the bottom because I always saw that the tubifex always surived in there in my main tanks. Which always made me angry to see a carpet of worms in your main tanks. Although you can keep them like that, the method of harvesting becomes very very hard. Unless you let there be a huge out break, its going to be hard to seperate the gravel and the worms. The same goes for blackworms. I tried newspaper or other paper substrate but can you imgine the work to clean the worms? Not a good idea.

The best substrate so far for me, is a mixture of gravel and java moss. Yes thats right, java. It eats up the nitrates and helps keep the water quality good. Also the worms like to travel through it. I harvest them with a pipet. Its a great investment if you plan to do this for a while. I just put them in a brine shrimp net and rinse. I also use the pipet to feed them. My endlers go crazy for them and I get to see the health of each one closely.

Now the hard part is done. All you need now is to feed them.

Lesson 6: What to feed them? I use to keep fry in the worm tanks so that the left over food feeds the worm. Also they seem to like fish poop. I liked doing that so nothing is wasted and I always strive to be fully independant of all means. However, once in a while, I would have a massive die off and the water would be so bad my fry would die. Lately I haven't have that problem. I believe it may have been a chain reaction of one worm dieing and spiking the amonia to kill the rest of the population. Then I leaned something, THEY EAT DEAD FISHES! So they have become my recycling center, when ever I have a fish that died from old age, I throw it in there. However, if it was a sick fish, then I always flush. Never compermise the other fishes.

Over the years I learned that it is best to feed them sinking food. I have a ton of extra guppy pellets that turned out to be too large for my endlers. So I use that to feed my worms. I also sometimes throw in cucumbers and other vegetables that was going to be tossed out anyway. Basically they can eat just about anything thats organic as long it doesn't break up very much. This is to perseve the water quality.

Lesson 7: Have patience. You have to let the population grow to a good size before harvesting. This is because the population needs to be at a cetain age before having a stable amount of offspring and become self sustabable. It depends on the tempeture amoung other conditions but I say 3 weeks should be an average time. Then just harvest some for your fishes.

A few last things,

They don't need light and I only use sunshine for the java moss to grow.

There is concern about parasites and diseases from tubifex, I was lucky to have a clean culture from the LFS free of disease and hitchikers. So if you plan on feeding your fishes long term on tubifex or blackworms, it is a good idea to culture your own so you know its 100% safe.

2 years ago, I started seeing them in Petland. I was tempted to buy and stop culturing but my biggest reason is I don't know how good they are. Plus from culturing, I have some very healthy worms which is reflected on my fishes.

I feed my endlers tubifex regularly and they grow very fast with it. I chop it up and feed it to the fry. But they colors don't show up as fast on just tubifex. I have no confirmation on other fishes but I believe it is the same. So I feed them a combination of perpared foods with lots of plant and animal matter for coloration. The tubifex boost there size quickly.

Heathy blackworms are great for larger fishes. They always love a treat and their health becomes wounderful. They have never been more healthy since I have been feeding them live foods.

I learned all these from many years of mistakes. I hope this may help anyone out there thinking of starting there own worm cultures.

Last edited by dr.tran; 05-08-2008 at 04:05 PM..
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Old 01-09-2008, 10:11 PM   #2
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Thanks for the information. I might have to try it.
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Old 01-10-2008, 03:54 PM   #3
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no problem. good luck culturing
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Old 02-19-2008, 04:24 PM   #4
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Thanks a bunch. This has been helpful.
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Old 09-14-2008, 06:58 AM   #5
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wow, very interesting!
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Old 09-14-2008, 08:36 AM   #6
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That is great information Dr. Tran.
I culture Grindal worms. For me, they are better because they are tiny for all my small fish. They do not smell like blackworms.
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Old 09-15-2008, 07:36 AM   #7
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Any photos of your set-up?
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Old 10-14-2008, 04:16 AM   #8
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pics?
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Old 10-16-2008, 07:02 AM   #9
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I culture mine in an unheated 10 gal tank with an airstones. The california blackworm is more temperature tolerant than tubifex. I learned that when the temperature is above 60, you can get better rates and was getting population doubling sometimes within 3~4 days. though in a 10 gallon I only let the population get to appox 3~4oz and then feed off till I got back to about 1oz. It's really pretty easy as long as you change the water bi-weekly at least. Pretty much what Tran stated. I did however use the whole 10 gallons of space instead of a shallow water culture.
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Old 10-16-2008, 10:02 AM   #10
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I culture tubifex worms in an old 3 foot tank in the back garden. The substrate is a two inch layer of glass marbles, and I feed them on mulm, deterus, fish poo, and the crud from the sponges of my internal filters. Once a week I change two gallons of water for fresh rainwater.
They do not like the water too warm, but I live in England, so that has not been a problem since the last halfway decent summer we had in 1976.
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Old 10-16-2008, 12:52 PM   #11
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EXCELLENT reading!
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Old 11-17-2008, 01:24 AM   #12
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Thank you guys for ur kind words. Its amazing to get ur comments now after about 10 months after this was made.
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My 29 gal tank

blackworms culture methods
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Old 11-17-2008, 11:31 PM   #13
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Have a couple quick questions -

1. Are you sure they don't need to be refrigerated? Because this site says they do.

2. Can I keep them in a worm keeper?

3. Is once or twice a week too much to feed blackworms to fish?

4. Are Boraras species mouths' too small to eat these?
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Old 11-20-2008, 05:14 AM   #14
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Since I just bought a few juvenile discus, I'm really tempted to buy 1/2lb of blackworm and 2 worm keepers on that site to start my own culture. Just wondering why the wormkeeper doesn't have a cover on top and I don't know if my family would let me keep the worms in the refrigerator.
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Old 11-20-2008, 08:30 AM   #15
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Quote:
Originally Posted by ZooTycoonMaster View Post
Have a couple quick questions -

1. Are you sure they don't need to be refrigerated? Because this site says they do.

2. Can I keep them in a worm keeper?

3. Is once or twice a week too much to feed blackworms to fish?

4. Are Boraras species mouths' too small to eat these?
1. Storing them in a small space such as a worm keeper requires they be kept refrigerated because it slows their metabolism. To culture them requires fresh filtered water at a normal temp for them, 65-75F if I remember correctly.

2. The worm keeper is for short term storage in a refrigerator. They don't have lids because they need the oxygen.

3. I feed my fish blackworms almost every day. But I feed my fish 3 times a day. Small amounts, Brine shrimp in the morning, flakes/pellets mid day and blackworms in the evenings if I'm home.

4. I cut up the worms for my small fish. I have seen some fish swim around for several hours with part of a worm hanging out of thier mouths as the part they have swallowed digests and they swallow more of it.

Hope this helps.
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