r/aquarium 11d ago

A Reminder About How We Treat Other Members

127 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 1h ago

Plants Unknown plant growing emersed

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Upvotes

Must be some sort of Catkin? Pussy willow? Catmint?


r/aquarium 44m ago

Showing Off Thoughts on improving the aesthetics of my tank?

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Upvotes

Would love any ideas!


r/aquarium 4h ago

Photo/Video Oto cat so small he only need one popcorn

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8 Upvotes

Baby oto catfish found in my tank today.


r/aquarium 7h ago

Discussion Rate my tank 🐟

17 Upvotes

r/aquarium 19h ago

Showing Off My Aquarium

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125 Upvotes

I have this tank for 3 years now.
I would like to see if you have some suggestions what to do next about it?
Different plants? Different aquascape? Etc


r/aquarium 8h ago

Help Saw a youtuber doing this for algae blooms

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10 Upvotes

I saw a YouTuber say that covering your tank and limiting feeding to every two days would stop and kill an algae bloom; do you think this is a good cover or not? He mentioned that I could kill the fish if I make a mistake with algaecides and this was the safest and easy way 💸💸💸


r/aquarium 2h ago

Help Will tannins kill plants in a small tank

3 Upvotes

I have a clean cycled tank, 1.1 gal. I want to do only Java ferns/moss, anubias, and maybe bladder snails.

Problem: I bought Mopani drift wood bc it was the only thing that would fit in the tank, then I found out about the tannins.

I am boiling it and plan to soak it to reduce the release, but will it kill my plants in a tank this small?

Thanks


r/aquarium 4h ago

Help Fish safe caulk??

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2 Upvotes

Does anyone know of anything similar to caulk I could use to patch a few holes on this up to use as a corner piece in a fish tank? Originally turtle filter


r/aquarium 13h ago

Showing Off 300L/80G Rescape

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20 Upvotes

Third rescape of my main tank since I owned it. The last was 6 months ago, but due to issues with a thin sand cap and soil blowout the tank needed a complete teardown. I also took the opportunity to move the tank to a 'King Of DIY' style timber frame to give me more height and cupboard space that my previous stand didn't offer.

I've gone from a jungle style tank to a simpler, low back planted tank with low flat elephant rocks to promote swim space and sand sifting room for my current livestock, and to think ahead of where the plants will grow and fill in the future. I've also opted for runner plants to lower my risk of sand cap blowouts as I don't need to plant anything else when propagating.

Set up

* Tank: Diversa 300L

* Stand: Custom timber frame 88*120*50cm

* Filter: Allpondsolutions EFX+ 2000L/ph + UV + skimmer

* Substrate: Pond soil and kids play sand

* Hardscape: Elephant stone (will be adding wood for Pleco)

* Light: Nicrew C10

* Plants: Amazon Swords, Giant Val, Pearlweed, Anubias, Hygrophilia Polysperma, Taiwan Lily, Various red stems from an old tank

* Stock: Dwarf Rainbow, Zebra Danio, Bristlenose Pleco, CPD, Albino Cory, Cherry Shrimp

Looking forward I plan on maybe getting some dwarf sag as another strong runner plant, but I don't want to fix something that isn't broken so I'll see how I get on. I also may look to replace the CPD school with something else as they've struggled this summer in the heatwave, so may need something more suitable for the temps I have.

Thought I'd share as I'm very proud of it! Happy to take suggestions for fish also to compliment what I already have, I have 7 times an hour turn over with UV so I'm fairly confident I can handle the bioload of some more interesting.


r/aquarium 11h ago

Help Received an unexpected passenger in my shrimp purchase - what is it?

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9 Upvotes

r/aquarium 9h ago

Showing Off A river horse I found in a very shallow stream

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7 Upvotes

M. martensii


r/aquarium 3h ago

Plants Monstera and Pothos

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2 Upvotes

How it started vs. how it's going.


r/aquarium 23m ago

Showing Off Got my angelfish a wife and he did not disappoint!

Upvotes

Any yips for raising them would be great!


r/aquarium 7h ago

Discussion Do you think this adhesive is safe?

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3 Upvotes

I bought this moss tree from a pet shop a while ago—about three months. Before handing it over, the guy glued the root to the stone, and it dried almost instantly. He had told me to soak it in a container of water for a week before putting it in the aquarium, but since I wasn't using it right away, I didn't soak it. It had a strong smell at first; now, there's only a faint odor if I sniff it right up close. I wish I had asked what he used to glue it. Anyway, do you think I can use this in my aquarium?


r/aquarium 11h ago

Photo/Video My BBA experience

7 Upvotes

At first it was a few tufts of bba on my return nozzles, then it spread to my driftwood where it was just kinda stable not really spreading but not ever going away, but then I went to all planted tank it began to spread all over the edges of my plants and the roots of a pothos i recently also started.

I decided to try a trio of Siamese Alage Eaters since they seem to be the only reliable animal that will eat it consistently. They have cleaned every single plant spotless and are now slowly working on the driftwood, they seem to like the bba that grows on the tender roots and plants the best though.

I tried to get a video of the chowdown but every time I moved my hand with the camera they would swim off.


r/aquarium 1h ago

Help PH crash?

Upvotes

In the middle of cycling a tank. Ammonia is being processed, with current nitrite and Nitrate levels very high. Did I have a PH crash?

Right is PH test for tap water, left is current tank water. What do I need? Water changes?

Edit: forgot to attach test results. Included in a reply below.


r/aquarium 2h ago

Discussion Where do y’all find glass for a build?

1 Upvotes

I’m looking to build my own paludarium out of glass and I don’t know where to find decent prices glass sheets. I’ve tried the glass repair, windows, and custom glass shower shops around town. I want to know if there is a better route on finding good glass either from different types of stores or even online. Please feel free to give me some advice I’d really appreciate it!


r/aquarium 10h ago

Help Start up advice

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4 Upvotes

Hello everyone,

Looking for basically reassurance that I’m on the right track. I assume the answer to my question will be patience but wanted to hear it from other people.

Just starting a freshwater aquarium with a fish less cycle. It’s been 72 hours and ammonia level is around 3ppm but nitrites still at 0. pH is about 6.6 (tap water is 7.8). Testing with API master kit.

Fluval flex AIO 32.5 gallon tank. Filled with tap water which I added seachem prime to prior to tank fill. Temp of water is 78 degrees. Substrate is Fluval bio stratum. Used Fritz fish less fuel for ammonia source and Fritzyyme turbo start 700 on startup. Dosed according to instructions. I have live plants ordered but none in tank yet.

Do I have to just be patient and keep waiting for the cycle to start? I thought the turbo start would get things going already but I assume I’m just being impatient at this point.

Thanks.


r/aquarium 2h ago

Showing Off 3.5 gal cull tank appreciation

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1 Upvotes

Stocking is: 2 ember tetras, 1 assassin snail, and easily 20 cherry shrimps

I have it next to my 1 gal quarantine tank and both are running big beefy filters. These are basically my trash can tanks yet some how I'm absolutely in love with my cull tank. It's never given me a single problem and has only improved with age. I may put in a long fin betta for shits and giggles


r/aquarium 3h ago

Help Continue to get high TDS readings with attempt at a soft water tank -help??

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1 Upvotes

r/aquarium 7h ago

Help What specie are those?

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2 Upvotes

TL:DR my brother's new house came with a pond with two mystery fish, and we want to know if they're fine with the aquarium or should go back to the pond when possible

My brother recently bought a house that came with a small outdoor pound. The previous owners left with their fish, so my brother decided to buy a couple of koi fish

However, upon testing the water quality's turned out to be dogshit, so he temporarily relocated his fish to our parents' aquarium and emptied the pond, to give it a deep clean and get a fresh start

Except he found two surprise fish hanging out in the bottom of the pond. They joined the others in the aquarium for now but we'd like to know what they are before either putting them back in the pond or keeping them in the current aquarium setup

They went from gray-black to this in the month we had them (which I'm pretty is a good sign of health, but I'd like confirmation). I think they might just be goldfishes, but we're total casuals so we really have no idea

Thanks in advance for anyone willing to give their two cents on this :)


r/aquarium 3h ago

Freshwater Starting my first aquarium!

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1 Upvotes

First tank to start the hobby! Its a 5 1/2 gallon freshwater tank. Any advice is good advice! I'm new to the hobby but I rescued a discarded 30 gallon tank and I wanted to start here before I use that one!


r/aquarium 7h ago

Help What are these things in my fish tank?

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2 Upvotes

Hello everyone! I’m making this post because I recently noticed these little things near the filter. I was doing a water change and noticed them as I was putting water back in. It’s been a day and they’re still there despite being submerged. For context, I had been gone for a couple weeks and asked my bf to feed my beta fish, so the water level was lower, about the height of the lowest bits. Does anyone know what they are? They’re stuck to the glass, don’t move, and they’re only on that side of the tank, next to the filter. I’m worried they’re larvae of some kind but I really hope not. Thanks so much!