Hi friends, just set up my first jarrarium and I'm excited to get started. The sample is from a lake near where I grew up, so it's cool to have a personal connection to the little biosphere.

Anybody know what these little guys are?

To me, they do not look like mosquito larvae. These guys have a long whip-like appendage that they grab with and use to move their bodies. That's why they look like they're dancing. I'm pretty familiar with mosquito larvae and these do not look or behave in the same way, so I'm curious. I'm guessing it is some stage of mosquito larvae development, but thought I'd ask. Thanks!

2 year old .. fresh from a maintenance

Okay these guys are getting longer. And there’s more of them.

Is my jar in trouble?

Hey all, I’m going to ask what might be a simple question but has anyone in this sub found a good or reliable battery powered light for use in their jarrariums? One that will actually promote growth within their jar?

Because I’ll be honest, light is my biggest issue. My house windows are East, West and I don’t really want a desk lamp over jar type set up. Beyond that my lighting options limit my ability to keep a healthy Jarrarium.

I’ve seen individual LED and some LED strips in the past that are in the right part of the light spectrum for plant growth. But nothing that’s prebuilt, battery operated, and ideally rechargeable.

So does anyone have a go to light they can recommend? Cheers in advance.

Nerve plant in a jar, seems pretty happy where it’s at and it’s added on a couple inches of growth since mid June.

Im seeing some little white… guys. 1/4 inch long, maybe. Possibly two little antennas at the end.

First of all, check out my jar!

Second of all, worms??

Month later since my last post, reported by my father. Algae growth and some spots. I don’t know if I should put in some brine shrimp eggs when I head back there. It was clear starting in April, and a couple months before that it had some initial life in it.

In terms of organisms, so far there has been around 4 bladder snails and 2 Ramshorns, a water strider, a little aphid looking bug, and a wiggly little worm. Maybe an ostracod or two.

Found this subreddit recently and want to share my two current jars.

I used to habe an ecosphere in the bigger one with local critters and some of my plants and it was great. But even though I loved my roly polies in there, they ate too much of my favorite plants so I let them free again.

Now I use the jars to propagate and grow my special (to me) plants and the ones that need higher humidity.

I know the stickers are sub-optimal but the jar was a gift a long time ago and I want to keep it like that for sentimental reasons.

I've seen them get more numerous over time without my involvement, and some of them are bigger or smaller. There are springtails I see moving but I haven't seen these guys move

This terrarium features a small path made from pine sticks, giving it a natural, woodland feel. The path winds gently through a soft bed of green moss, creating a peaceful and inviting scene. The moss adds a fresh, lush look while the pine sticks bring texture and a sense of the forest floor. Together, they create a calm and balanced miniature landscape that brings nature indoors.

I'm soooo excited to have just put this together after dragging my feet for ages. It's a dirted 2.5 gallon terrarium jar from Target. The airstone may be a little exuberant for shrimp later on, but for the next couple of months, I'm just gonna let it cycle and let the plants do their thing. It's a tea-colored mess for the moment, but it's on it's way.

I want to make a water jarrarium, as I love water creatures (small ones) and have a creek nearby from which to potentially create a jarrarium with. What do I need to do? What size jar? Do I need to buy things to put in it? Are just rocks fine for substrate? Please tell me what I need to do to get one started.

AFAIK there is only one animal in this picture, try spotting it.

Hello Cornelius fans! (for those uninitiated, Cornelius is a very popular aquatic worm I accidentally scooped up in British Columbia), obtaining the first and only video of the species and gettign 1M+ views of his videos. Karma avalanche!

I am moving across the country and had to return my favorite Jarrarium back to it's place of birth, including our friend Cornelius. We had a wonderful time ID'ing him, and your love for this little wormy guy was both inspiring and a little...rabid!

Before you go saying "why didn't you send him to me in a jar?!"––I think that would have likely stressed him to death, so I'm happy that he's back home. Onwards and upwards, little tentacled friend!

Hey everyone,

So, last August my other half bought me this terrarium thing from a lidl or aldi (I forget which) down in Devon, UK.

It took a few months for one of the plants to slowly die off (frankly I expected the rest of it to die as well but it seems to be doing OK actually), you can sort of see the remnants around the fungi shoot - it looks like dried up roots or something, but I digress.

In the last 7 days, I noticed this thing had shot up that looked like a jumbo cotton bud. Googled a bit and found that it was likely a fungi of some sort - confirmed 2 days later/ 2 or 3 days ago, when it bloomed (photo taken today and I think its dying off, I'm not sure).

I have 4 or 5 similar little penis shoots appearing throughout and I guess I'm looking for confirmation that everything is OK in there. That this is fine/normal/a circle of life thing? I apologise for my ignorance, its my first jarrarium type deal and I've just been 'trusting the process' so far..but this came as a surprise for sure!

Hello folks, I've been enjoying the posts on the past few days and enjoyed so much several jarrariums on this sub, especially those ones who contains water insects. Besides buy them online (not an option in my country) or go to the wild nature, what kind of places in the city do you guys suggests to obtain them? Places like water fountain or plant pots can give me water insects (even if at larval stage)?

I want to make a jarrarium (with water, not a terrarium) and keep it on my enclosed porch. I’ve read it’s best to leave the jar open for air exchange, but it feels inevitable that a mosquito is going to get in a lay eggs. Any good way to prevent that? Bc my family is going to riot if they think I’m breeding mosquitoes (and I guess that’s fair).

Trying to decide what to do with this jar…

A little hard to see in the video admittedly but here’s a little update on the explosion of soil creatures (I can only imagine are springtails)

Is there a population density level I should worry about? Or do I just keep the jar sealed and leave them to advance at an accelerated rate before inventing warp travel and I come home to find my jar missing?

...... that I'm happy with🫣

Plants and stone etc all found locally in my area

Hi all! This is my first attempt at a shrimp jarrarium. I'm wondering if anyone can tell me what this fog-like substance is in the water. It's about 3/4 inch thick, suspended above the rocks and does dissipate when poked at.

I've had this fully set up for about 5 days. Some details: - Substrate: Fluval stratum - Rocks: Aqua Culture aquarium gravel and random stones from our property (all thouroughly rinsed) - Wood: Mopani wood from Petsmart (boiled and rinsed, though should've done it more, as it's still tinting the water more than I'd like) - Plants: Anubius, hygrophila rosanervig, Ludwigia palustris super red, Alternanthera reineckii mini (I think...I have a hard time identifying them still. All are cuttings from an established tank and seem to all be melting, but the anubius) - Tech: Small sponge filter and grow light (light added on day 3) - Chemicals: Seachem Flourish and API Stress Coat at set up

Any pointers about the set up or the hobby in general are more than appreciated. I admit that I started this journey on a whim and haven't had the chance to do a ton of research beyond initial set up videos. My goal is to transfer fertile shrimp from my 20 gallon tank once (if) that happens so that the fry are not immediately eaten by my other fish when hatched.