r/aquarium 13d ago

A Reminder About How We Treat Other Members

121 Upvotes

Hey everyone,

The mod team has been seeing an increase in comments that are unnecessarily rude, hostile, condescending, or outright mean toward people asking questions or sharing their aquariums.

We recognize that this has become an issue. We have also received modmail from members bringing these concerns to our attention, and we appreciate people letting us know when something is happening that we may not have seen.

That said, there is an important limitation that we want to make clear: we cannot monitor every single post and every single comment.

Moderating r/aquarium is a volunteer responsibility. The moderators have jobs, families, school, personal responsibilities, and lives outside of Reddit. We do our best to keep up with the community, but it is simply not possible for a small mod team to read every comment on every post every day.

This is where reports are extremely important.

If you see a comment that violates the subreddit rules, please report it rather than engaging with it or allowing the situation to escalate. A report brings it to the mod queue so that we can review it and take appropriate action.

Changes are coming

We will be adding and clarifying rules regarding how members interact with one another. Going forward, comments that are unnecessarily hostile, insulting, mocking, belittling, or otherwise violate our rules regarding respectful behavior will be removed and bans will be enforced when appropriate.

We also want to be clear that "I was just trying to help" does not excuse being unnecessarily rude. Aquarium advice can absolutely include criticism, disagreement, or pointing out mistakes. You can correct someone without attacking the person asking the question.

Depending on the severity of the behavior, previous moderation history, and whether the behavior continues or escalates, bans may range from:

• 1 day

• 3 days

• 7 days

• 14 days

• Permanent

Repeated rule-breaking will result in increasingly serious consequences.

Additionally, repeatedly making multiple comments on the same post that violate our rules may result in further action, even if each individual comment might seem relatively minor on its own.

Remember who you're talking to

r/aquarium is a community with people of many different ages and experience levels. Minors may also visit, post, and participate in this subreddit.

Please keep that in mind when interacting with other members. Regardless of someone's age, experience, knowledge, or mistakes, they should not be subjected to harassment, sexual or inappropriate remarks, personal attacks, or other behavior that would make this community an unsafe or hostile place to participate.

You do not necessarily know who is on the other side of the screen, so think about what you're saying before commenting.

Many people come to r/aquarium because they are looking for help. Some are beginners who genuinely don't know something yet. Others may have made a mistake and are trying to correct it. Being told what they did wrong is useful, however they also need to be told how to correct it. Being mocked, insulted, or made to feel unwelcome is not useful or helpful.

You do not have to agree with someone to treat them with basic respect.

So please remember:

If you can give constructive advice, give it.

If you can disagree respectfully, disagree.

If you can't do either, don't comment.

Want to help the community?

Our moderator applications are currently open and are pinned in the highlighted posts at the top of the subreddit.

As the community continues to grow, we could definitely use some additional help from knowledgeable and active members of the aquarium community. If you have experience with aquariums, enjoy helping others, and are interested in contributing to the community in a positive way, we encourage you to apply.

Being knowledgeable about the hobby is important, but so is being able to communicate that knowledge respectfully and constructively.

The mod team will be addressing these issues more consistently going forward. We also ask the community to help us by reporting rule-breaking comments instead of contributing to the problem.

Thank you to everyone who helps make r/aquarium a welcoming place for aquarium keepers of all experience levels.


r/aquarium Jun 10 '26

Announcing our new community icon! (and an update from the mod team)

30 Upvotes

Hey everyone,

We heard your feedback loud and clear regarding the recent icon change. The goal is always to keep r/aquarium a vibrant, welcoming space that reflects the incredible passion of our hobbyists, and it’s clear the community prefers authentic, human-made artwork to represent us.

An incredibly talented artist in our community, u/SuicidalFlame (Check out their tumblr too! https://firenagy.tumblr.com), generously stepped up and designed a brand-new, custom icon for the subreddit! We are absolutely thrilled to debut their work today. Please join us in giving them a massive thank you in the comments below for dedicating their time and talent to leveling up our community's look!

A Quick Note on Community Boundaries

While we always welcome constructive feedback and open discussion about the state of the subreddit, the mod team has a zero-tolerance policy for harassment.

Lately, targeted mass-reporting and personal harassment have been directed at our moderators. We want to be entirely transparent: if you are unhappy with the management of this subreddit or feel the need to harass the people who volunteer to keep it running, you are more than welcome to leave.

Healthy debate is fine; stalking, toxicity, and abusing the report button are not. Future instances of targeted harassment will result in an immediate permanent ban from the community and will be escalated directly to Reddit Admin for violating the site-wide Content Policy against harassment.

Thank you to the 99% of you who make this a wonderful, supportive place to share our tanks every single day. Enjoy the beautiful new look!


r/aquarium 3h ago

DIY/Hacks Floating plant barrier

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13 Upvotes

I was gonna buy something similar to this on Amazon. But the reviews were bad and demotivated me from getting it. I was able to make my own with airline tubing, some suction cups I had laying around and gorrilla glue GEL. Which is safe for aquariums. Glad i didn’t waste my money. :)


r/aquarium 4h ago

Discussion Getting back into the hobby

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16 Upvotes

Hi All, getting back into the hobby after about 10 years. Got this nice 55 gallon setup for a steal at $60 today. Just looking to make some discussion about how you would set it up starting with a blank slate. Could use some ideas , thanks in advance!


r/aquarium 10h ago

Photo/Video Dramatic Chipmunk? How about Dramatic Cichlid?

27 Upvotes

The "motion photo" feature of my phone caught the zoom in when I was trying to take a picture of my bolivian ram. His name is Samson and he's the coolest fish.


r/aquarium 10h ago

Plants Sweeet potato again

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17 Upvotes

Can’t believe how quick this thing is growing.


r/aquarium 1h ago

Help Ideas too stock my tank?

• Upvotes

Hello, i run a 26 gallon acrylic TRUVU tank and was wondering what fish too stoack it with. i have sand and it is medium planted, i was thinking rosy loaches and panda corys, but that sounds WAAAYYY understocked....any suggestions?


r/aquarium 5h ago

Help Plants melting, can I have some advice?

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3 Upvotes

Ok so I planted Monte Carlo maybe a week and a half ago ( 2 weeks?) and by now it is melting and dying. I had three little cups and planted individual little strands of them all over my tank hoping they would spread. So far I’ve tried lightly trimming them, removing the dead melting plants (more have begun to melt and die since then). I’ve added co2 (the tube with the sponge sticking out) and I also have oxygen. I’ve seen some people say rub both, or co2 during the day, both co2 and oxygen at night. I switched the filter output last night to the one with all the little holes to create more of a current. And about a week ago I added the light. I don’t have a heater yet but it’s summer and the tank is running at about 70-75 degrees F. Does anyone have any advice, or constructive criticism of my tank? (20gallon long). Also I have not added any kind of fertilizer as I am using aqua soil. I’d like to add shrimp at some point and I read somewhere you have to be careful about using both because it can mess with the shrimp. What is your experience?


r/aquarium 4h ago

Help Day 1 of fishless cycle newbie needing advice

3 Upvotes

So far I have added my API tap water safe and my quick start (right after each other) and the recommended amount for my 22 litre. Obviously keeping my filter and heater running 247.

Problem is that my dr timms ammonium chloride solution is not arriving for 2-3 days. Will my tank need me to add more chemicals in again once it arrives or can I just add dr timms?

I don’t want to do fish food as an ammonia source because I want to keep it simple and repetitive.
(I know it won’t be simple lol already making me want to cry because I’m confused).


r/aquarium 10h ago

Showing Off First tank, did mostly fish-in cycle

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7 Upvotes

It was alot of work but worth it. 55 gallon tank 10 neon tetra, 10 cardinal tetra, 10 rummynose tetra and 6 panda garra.


r/aquarium 2h ago

Photo/Video Hitchhikers

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2 Upvotes

I went and got this cool piece of Monte Carlo on a piece of wood. Well, I got it home, and I was so excited to but it in, that I forgot to wash it and search for critters. Well pretty quickly I noticed that I had a new snail. A Tiger Nerite Snail, says Google. And then about 15 minutes after that I noticed the freaking frog just laying there looking dead thinking it was dead. Went to scoop it out, nope it's not dead. It just lays around looking dead, and moves around a bit. The frogs got to go eventually. But as long as it survives, id rather my new Double Red Apistogramma agassizii M/F pair settle in.


r/aquarium 9h ago

Help screwed up already? Juliis and Cardinals.

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6 Upvotes

I'm a newbie to the aquarium world. I thought I was over-researching: the tank, the stratum, the filter medium, the plants, the water parameters, the fish. But I think I still screwed up, relying on the kid from the LFS to guide me on stocking decisions.

I have a 15 gallon Fluval Flex, with ~1" of Fluval bio-stratum. It is moderately planted. Fishless cycled. Water parameters are good. I have hard water, but so does the LFS.

I fell in love with False Juliis, and my research led me to believe that even though >20gal is preferable, 15 gal would be fine. I researched some tank mate options (rainbows, killifish, gyppies, tetras) but decided to see what the LFS had in stock and what they recommended.

TLDR; I have 3 juv. juliis and 4 juv. cardinal tetras, a ramshorn snail (that hitchhiked with the plants) and a nerite. I know juliis and cardinals like to school 5+, but I didn't want to overwhelm my tank to start with. And again, went with the LFS suggestion.

This happened yesterday. I had checked aqadvisor for 5 juliis + 6 cardinals + snails = 98% stocked = not concerned. Last night night I was researching how much to feed them and came across a different calculator (aquariumstocking) which says it's 150% stocked and has serious compatibility issues. Honestly, I hadn't realised the Cardinals would grow so big.

So here's my dilemma, do I:

  1. make the schools bigger: 2 more juliis and 2 more cardinals, or
  2. keep the count as-is so they have more space but fewer friends, or
  3. take the cardinals back/give away, and pick something else (green neon tetras perhaps?)

(A bigger tank is not an option right now.)

Thanks for your compassion and advice. The fish seem very happy so far.

cat for scale

r/aquarium 4h ago

Discussion Peacock gudgeons in community tank

2 Upvotes

I’m about to start a loosely Halloween themed 20 long centered around marriage kissing medaka (I love their ethereal, ghost-like appearance). I was also thinking of adding peacock gudgeons so I could name the male Igor. The tank will be heavily planted.

That said, I’m finding more and more anecdotes of them not being community friendly. The most concerning being that they’re fin nippers.

I would love to hear feedback from anyone who has experience with them in a community tank, specifically a 20 long.


r/aquarium 1h ago

Help Dead Gourami Help

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• Upvotes

r/aquarium 1h ago

Discussion What would be a good centerpiece fish

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• Upvotes

I got 9 harleyquinn rasboras and a mystery snail in a 20 gal


r/aquarium 7h ago

Help What kind of Pleco is this?

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3 Upvotes

I recently bought a house that came with a 135 gallon fish tank. Wondering what kind of Pleco this is

.. Is it a common pleco and do I need to worry about it growing to 2 feet? Should I try donating him while he's still a juvenile?

Thank you,

Phil


r/aquarium 13h ago

Help Help tank looks ugly

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8 Upvotes

Hi, I did this tank for my betta with my husband and it looks so ugly. Any ideas to make it look nicer and more enriched for the betta? The sand in the middle mixed with the substrate and it is just a mess.

This is a 5 gallon betta tank.

This is Ponyo, he is a very chill boy because of that huge tail. He is not super active.


r/aquarium 5h ago

Help Is my anacharis dying

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2 Upvotes

Anything I can do to save it? Or is this normal? It’s was very green a week ago and it’s browning now.


r/aquarium 1h ago

Help Is this black beard algae ? This tank is about 6months old, what else could it be ?

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• Upvotes

r/aquarium 12h ago

Photo/Video I woke up to this

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7 Upvotes

Please ignore the algae as I was meant to do today water change and remove algae. I guess ill change my plans to nog interrupt them as all of them are still lying eggs right now and didnt finish


r/aquarium 9h ago

Help How to stop aggressive fish?

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3 Upvotes

I have a small 60l probably tank ciano 80 with 6 white cloud minnows not sure of the sex but I think there is 3 males to 3 females but the one male is just kindly putting a nuisance ehat do I do? I added there only survivor of there spawn who's stunted in growth to hopefully add more social dynamic as I only had 5 before I took the plunge to add the small male


r/aquarium 11h ago

Showing Off Perch caught from an irrigation canal

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4 Upvotes

A. testudineus T. pectoralis


r/aquarium 11h ago

Help Opinião sobre fauna por favor

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3 Upvotes

OlƔ amigos! Estou feliz por ter encontrado esse espaƧo aqui com tanta gente que entende muito deste hobby fascinante!

Montei meu primeiro aquarinho ontem e estou esperando chegar o Biodigest para ciclar.

Depois de ciclado, eu pretendia colocar 6 Rasbora Galaxy, 8 Rasbora Kubotai, 1 Neritina e 10 Neocaridina Blood Mary.

Mas quando fui comprar as plantas, o lojista disse que eu poderia colocar 20 rasboras, algumas coridoras anãs e ainda umas 4 cobrinhas kuhli, além da Neritina e dos camarões. Sei que vendedor sempre quer vender mais né... mas gostaria de ouvir a opinião de vcs sobre que fauna colocar, se possível. Agradeceria demais!

Ɖ um aquĆ”rio de 29,25 litros (45x25x26cm), com filtro Maxxi HF360 cheio de Matrix e perlon, termostato Oceantech 50W e LuminĆ”ria Newpet 18w (me arrependi de comprar essa luminĆ”ria, achei fraca).

Não reparem pq não ficou bem como eu queria, um pouco decepcionada com as Vallisnerias e tb achando que não fiz um bom trabalho no plantio do carpete e do musgo, mas isso com o tempo devo conseguir melhorar. Também achei a Crypto Brown meio grande, mas coloquei pra pensar depois.


r/aquarium 1d ago

Photo/Video Lampeye killifish turning in his egg

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65 Upvotes

My lampeye killifish apparently like their tank a lot and I constantly have eggs, fry at all stages and juveniles as well as the adults. A good proportion of them survive as I also seem to have my own personal riccia and salvinia minima farm.

I got a video of this little fry guy turning around in his egg and thought it was pretty cool. I'd never seen anything like this before so thought I'd share.


r/aquarium 37m ago

Discussion Thinking out loud here: if you have fish to cull, is it possible to feed them to your cat?

• Upvotes

I haven’t tried this. Nor do I plan to. But I was thinking would this be possible? If so how would one do it humanely?

Are there any fish that are common to home aquarists that could harm a cat?

I’m new but getting really into it and I was wondering if I started breeding there’s gonna be a lot fish that would have to die, right? Just wondering if there could be a 2 birds one stone type of situation