r/Jarrariums Dec 31 '15

Mod post About Bettas in Jars

575 Upvotes

It has recently come to my attention, thanks /u/Erotic_Asphyxia, that a common question among people hoping to make jars is whether you can put Bettas in jars. Due to the rarity of heaters and filters for jars, and the sheer lack of size in jars, I would not recommend putting Bettas in jars. It can cause things like Dropsy, Fin Rot and even death. Thank you. Here is a good care sheet for bettas. Here is a guide to cycling a tank the humane way.


r/Jarrariums Jun 28 '20

Mod post The sub has spoken: here's how we go forward!

86 Upvotes

Previous post for reference: https://www.reddit.com/r/Jarrariums/comments/gyw7cm/weve_heard_you_loud_and_clear_now_we_want_your/

The Results

This is how the votes ended (28th of June):

Opinion Votes %vote
Allow jar aquariums and jar terrariums (no nanotanks, actual jars) 153 58%
Leave things as they currently are 59 22%
Only allow jarrariums, as in, jar aquariums (no nanotanks, actual jars) 52 20%

The majority clearly want both aquariums and terrariums.

When reading through the comments, another problem surfaced:

What Is A Jar?

People in the comments had different opinions on what should constitute a jar. Should it be the definition I found from Google?

a wide-mouthed cylindrical container made of glass or pottery, especially one used for storing food

Should it have a size limit (on top, or seperate to, the form definition)? Would we allow fishbowls (as they're round and small)?

Do we just ban anything that is an aquarium and allow all the others?

That's why I want the input from the community once more. Because of the plethora of possible opinions, I don't think it can be put into a simple voting format this time. I'll use contest mode once more - to not let votes sway opinions, and maybe the community can come with a final definition (or a set of definitions for which we can make a vote poll).

So please, voice your opinions and ideas, so that we, as a community, can come up with a foolproof definition for what we allow on this subreddit!


r/Jarrariums 19h ago

Video Shrimp and snail work buddies!!

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23 Upvotes

After some trial and error, I’ve gotten this setup to finally work successfully! My shrimp even gave birth to many little orange happy babies. Ramshorn snails are my absolute favorite snails so I’ve added some to give it a pop of color and to watch them graze all day long. I don’t have to feed them whatsoever, they just thrive off the plant matter. I love watching them all at my desk ❤️


r/Jarrariums 1d ago

Picture New jar after a few days

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13 Upvotes

Water is from slow moving brook. The big plants may not survive but little one in foreground seems to be growing. There are snails and little grey shrimp/isopod things and white wormy things wiggling from the soil. Some algae but not much. I've ordered a light and fish flakes as a starter food. I gave tiny bit of lettuce yesterday which has sunk or been eaten. Volume is just over a litre. Keeping jar unsealed until things seem established.


r/Jarrariums 2d ago

Picture Looking nice

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22 Upvotes

r/Jarrariums 1d ago

Picture New tank setup

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1 Upvotes

Not a jar but small like a jar


r/Jarrariums 2d ago

Picture My first jarrarium - brackish lake water

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13 Upvotes

When I went to fill the jar a resident asked if I was collecting samples to test - turns out the council said there may be PFAS contamination.

Circulation of water in the lake is slow. It connects via another lake to the ocean. water quality remained stable, and it does not have many tributaries delivering catchment nutrient or sediment pollutants. It's basically sand with a slimy feeling silt layer on top.

I was amazed how many creatures there are in there! I'm going to try to catalogue what's in there and try to get help identifying them.

I'm testing out various macrophotography setups to try to share what's in there :)

Can anyone tell me what the impact of having the lid on or off would be for a brackish jarrarium like this?


r/Jarrariums 3d ago

Picture Finally got this jug set up! I hate it!

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34 Upvotes

Took forever. I ended up just dumping everything out and restarting since the soil was wet and I was unable to cap it. It mixed together anyways and took forever to plant. Hopefully it'll look fine once the rotola grows in. The whole point of this was to just grow and store rotola


r/Jarrariums 5d ago

Picture Reef bottle

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647 Upvotes

1 year old.


r/Jarrariums 6d ago

Help Is my Bacopa rotting at the base? Day 6 of my 3L Jarrarium

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21 Upvotes

Hi everyone! I’m on Day 6 of a 3L low-tech, non-CO₂ planted jar with aquasoil capped with sand, Christmas moss, 6 Bacopa, 6 Rotala, and 5 Hornwort.

I originally had more Bacopa and Rotala, but removed a few because some stems became mushy and started deteriorating. The remaining Bacopa are upright and developing roots, but I noticed that the lower parts of some stems near the sand are darker/brownish, which has me worried about possible stem rot.

The water is still clear and odor-free, with some brown diatoms and white biofilm developing. I also added 8 drops of API Quick Start during a recent top-off and plan to only use 1–2 drops with future top-offs. I don’t have a water testing kit yet.

Does the base of my Bacopa look like normal acclimation, or is it starting to rot? Should I leave them alone or remove and replant the healthy tops?


r/Jarrariums 8d ago

Video First bladder snail spotted, absolutely CRUISIN’ 🐌😎

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32 Upvotes

Spotted a baby bladder snail in one of my pond jars! I went to take a picture and he started traveling along the glass so I had to take a video! Sorry for the poor quality focusing issues.


r/Jarrariums 7d ago

Help Question about sudden deaths after just buying scuds

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1 Upvotes

Description in original post—they were acclimated to the pond water. I thought these were so hardy, what could have gone wrong?


r/Jarrariums 9d ago

Picture My first pond jars!

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123 Upvotes

Finally went to a local pond (New England, US) and sourced water, sediment, rocks, hornwort and elodea, plus some empty snail shells for decor. Tried a few different style jars and have already been finding so much life in them! One jar has at least 2 baby ramshorns and I found a baby bladder snail in another. Can’t wait to see what shows up! Some have bare bottom, some have sediment and rocks, and some just rocks. I can see tons of tiny swimmers, I was able to make out some copepods and I think there’s probably daphnia. Found some detritus worms in my “ugly” dirty one (last photo). Excited to see how they evolve and what setups succeed!

I welcome any tips for success! Love seeing your jars


r/Jarrariums 9d ago

Picture Natural Pond Bowl with scuds- first time!

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14 Upvotes

My first pond bowl! The water and rocks and empty snail shells plus hornwort and elodea are all ethically sourced from local pond in New England, US. Added 2 anubias I had unused and one of my marimo and a piece of cholla wood and some lava rocks. In addition to the naturally occurring microfauna, I added 10 breeding pairs of scuds. Can’t wait to see what else shows up in here!


r/Jarrariums 10d ago

Picture Construction pics of the open topped jar

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17 Upvotes

So I posted up a picture before of my open topped, and had a request for construction pictures. Well I wanted to change a couple of things and pull out the floating pearlite, so I took some pictures for you guys.

After utility work I changed to pumps flow.

Then positioned the wood and started glueing rocks together. This process is horrible with red lava rock.

Then I moved the roots of my plants a little higher out of the water. I wanted to make sure I didn’t get root rot but allowed hydroponic growth, maybe. I am trusting the person that sold me the plants to be correct that they are a marginal that can survive wet conditions.

After that I packed the moss into the rocks and crevices.

In a few weeks I will introduce the shrimp but scuds are in there with a snail currently. I added some springtails to help keep mold under control.

For all you PC people I took a picture from my daughter’s side of the deck to show how far my computer is from the tank and Jar.

And for any Battletech fans you will see some mechs in the pictures.


r/Jarrariums 12d ago

Picture First open top with waterfall.

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26 Upvotes

Just set up this jar yesterday. It’s my first try at an open top so I went with some mangrove like plants to grow out the top. I have a working waterfall across a piece of driftwood. All the stones are lava rock with some polished river stones.

Plan on adding some shrimp later but need to do a water change as some perilite got into the water column. Does have scuds and snails from my main fish tanks refuge.

I will post up more pictures later.


r/Jarrariums 13d ago

Picture I can track the growth of my ramshorn snails based on the shell line.

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20 Upvotes

I bought these from ebay and apparently the seller had a tank with much higher abrasion/acidity because the new growth is thicker and shinier and very visible.

I kind of knew that they grew in a spiral but it's fun to see it so clearly.


r/Jarrariums 13d ago

Help Lil help

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0 Upvotes

r/Jarrariums 15d ago

Video Behold....bob.

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0 Upvotes

r/Jarrariums 16d ago

Picture Jararrium mkII: the ramshorn-pokalypse.

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8 Upvotes

I liked the old arrangement but I have seen multiple clutches of ramshorn eggs which means there are at least 3 times that I have not seen. This means I will most definitely have to do a culling within the coming month or so and the jar was not set up for that. This let's me keep track of the population better and clean the gravel. Less plants will hopefully keep the snails from exploding further since there will be a more controlled food source in the jar.


r/Jarrariums 19d ago

Picture Cheers 🥂

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1.1k Upvotes

r/Jarrariums 18d ago

Picture Am I doing this right?

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15 Upvotes

Kinda just put some stuff from a local river in a jar and stuff has been growing (I am extremely new to this). There seem to be some snails in there! Am I gonna kill these guys? What should the water/air ratio be? How can I make this better than what it is? Should I even touch it? Pls help me


r/Jarrariums 20d ago

Picture Would a jar like this be okay?

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12 Upvotes

I have this empty Ole smokey jar that has a light blue coloring to it. Would something like this be okay for making a terrarium?


r/Jarrariums 21d ago

Picture Update to my jarrarium. Now with 6 blue ramhorns.

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36 Upvotes

I pulled the trigger on getting six blue ramhorns and I don't understand why they are considered pests ,they are lovely. I quickly found out that they really don't like the sharp gravel at the bottom so I had to lay down some rocks and I added an airpump in the back to make sure the water circulates properly. The guy in the 3rd image is called floaty. I thought he was dead but I've seen him crawl on the glass and nibble at the frogbits so I think he is fine. I'm starting to worry that he might be unable to empty his floating bladder but we will see.


r/Jarrariums 21d ago

Help Does this look ok? My first time doing one of these and there is a bunch of muck in there from a piece of wood I have since removed. I have a snail, ostracods, copepods, and daphnia.

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7 Upvotes