What are the worms in my ecosphere?

There are too many worms in my ecosphere. It’s freshly made ecosphere frome a lake. What should I do about them? Are they harmless? You can’t see them on photos:(

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By ecosphere do you mean paludarium/aquarium? Aquatic worms are almost always harmless. Can you describe them in anyway? How large? How do they move? I can think of many possibilities:

(Flatworm in pondwater sample)

(Leech in lakewater)

(Detritus worm in sample of pond water)

If you are making a sort of mini “ecosphere” with lake water, unintended wildlife is pretty much guaranteed. Removing them would be fairly difficult. Can I ask why you are making this aquarium? Depending on your intentions, there can be a few solutions. Good luck with your project!

Hello lamera! I am doing this because I thought It would be fun. And it has been a lot of fun for me because I like watching the little snail. The worms are so similar to last picture you sent “detritus worms”
They swim like a wheel. They keep spinning. But the ones on the ground keeps moving at the same spot and there are too many of them.
Are they harmless?

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Those do sound like detritus worms to me! They are completely harmless and coexist with other animals like aquatic snails. They are called detritus worms because they often hide in the detritus/substrate.

Detritus worms are most active when algae and other organics build up in the water. You can consider doing a partial water change by replacing some of the lake water with newer water (I use rainwater, but bottled water and tap water should also work, just make sure it’s de-chlorinated). I recommend doing a water change maybe about once or twice a week, which is also probably necessary to keep the snail healthy.

A more permanent solution is to remove some of the sediment from the jar, as it looks like the sediment is fairly deep. Deep sediment provides the perfect environment for worms to live and thrive, so clearing some of it will prevent the worms from becoming overpopulated.

If you have any other questions, feel free to ask!

I thought ecosphere could stay alive without me :/
I don’t think that I will change its water every week :(
Let’s see what happens if I don’t do anything;(

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The system could live without you interfering (although, it’s possible ammonia to build up, creating an undesirable environment for wildlife). If you don’t want to do water changes, you can just wait for water to evaporate and then top the jar with clean water. This would require the lid to be at least partially open, though

It can, but it will develop in its own way. These suggestions are because you mentioned wanting to manage the way it develops (that is, influence the number of worms).

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Thank you for all of your help:)

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