r/AquariumHelp

Image 1 — Pls help identify what is wrong with the fin
Image 2 — Pls help identify what is wrong with the fin
Image 3 — Pls help identify what is wrong with the fin
Image 4 — Pls help identify what is wrong with the fin
Image 5 — Pls help identify what is wrong with the fin
▲ 5 r/AquariumHelp+1 crossposts

Pls help identify what is wrong with the fin

Hi my betta fish is doing great very active and eating well however two weeks ago I noticed a small lump on its fin and kept an eye on it while maintaining water quality and adding Indian almond leaves and API Stress Coat, just in case it was an injury. However, its dorsal fin is now retracted; its appetite remains excellent, and it is quite active. I don't know what could be going on—I don't see a cottony texture, but I do see white scales. It has been three weeks, and this is how the situation has progressed. Do you have any idea what might be happening?

Last 3 photos are fron today the first was 2 weeks ago the second one week later

u/Joule_Rapier43 — 4 hours ago
▲ 1 r/AquariumHelp+1 crossposts

125 Gallon freshwater stocking ideas

I’ve been keeping freshwater aquariums for about 5 years, but they’ve all been smaller tanks. I’m starting to plan my first 125-gallon and, before I settle on a stocking list, I’d love to hear what everyone else enjoys keeping in larger freshwater tanks. I tend to gravitate toward oddball fish or species with unique behaviors rather than fish that are just colorful. I’m not really a cichlid or Oscar guy, and while I do like bichirs and knifefish, I’m hoping to hear about some different ideas instead of those. If you had a 125-gallon freshwater tank, what would you stock it with and why? I’d love to discover some species I may have never considered.

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u/Perfect_Dependent145 — 9 hours ago
▲ 13 r/AquariumHelp+4 crossposts

Please advise -I don't know what to do about fish (euthanise or wait)

I don't know if I should euthanise this fishy now or still wait...

Neon developed some discoloration on him a bit more than 2 weeks ago and now it did evolve a bit as the discoloration filled in a bit more. He swims, schools and eats normally. And this makes it harder for me to just euthanise the poor fish, hoping it is not NTD...

I don't have any other tank to be able to safely quarantine him.

I was thinking that at any new symptom or obvious worsening I will euthanise the fish so that it doesn't die in the tank, but I am afraid of it dying unexpectedly despite normal behavior.

u/HugsNoKisses — 14 hours ago
▲ 8 r/AquariumHelp+2 crossposts

Fishless cycle - 16 days in, ammonia is dropping but I’ve never recorded any nitrite or nitrate

I’m cycling a heavily planted 39L freshwater tank and I’m a bit puzzled by what’s happening.

Tank:
- WIO 60-F Shallow (39L)
- Oase Filtosmart 60
- 50W heater at 24°C
- Twinstar 600E IV running 6 hours/day at 40%
- Dark sand over mesh bags of aquasoil
- Heavily planted (11 Tropica 1-2 Grow pots + Peace Lily) - these look very healthy and are growing well
- Redmoor wood and Seiryu stone

I’ve been fishless cycling with Dr Tim’s Ammonium Chloride since 19th June, testing almost every day with the API Master Test Kit.

Timeline:
- Started by dosing to ~1.5-2 ppm ammonia.
Had a bacterial bloom within the first couple of days which lasted about a week and has now totally cleared
- Biofilm developed on the wood
- Ammonia initially disappeared very quickly over 24 hours, which I assumed was mostly the plants
- Since then, ammonia processing slowed down
- On 2nd July I dosed 35 ml of Tetra SafeStart directly into the filter to try get the nitrifying bacteria to get going and dosed ammonium chloride to 2ppm
- Current readings over the last three days are roughly:
3 July: Ammonia ~1.5 ppm
4 July: Ammonia ~0.75 ppm
5 July: Ammonia ~0.5 ppm

Throughout the entire cycle I have never once measured:
- Nitrite above 0 ppm
- Nitrate above 0 ppm

I’ve confirmed the nitrate test procedure multiple times (shaking the bottles and tube very thoroughly etc.).

Water parameters:
- pH around 7.2-7.4
- KH ~4 dKH
- GH ~6 dGH
- Temperature 24°C

My questions are:
- Has anyone seen a planted tank cycle like this where nitrite and nitrate never become detectable?
- Could the plants realistically be taking up enough ammonium that I’m barely seeing nitrification?
- Could the bacteria simply still be establishing in the filter despite 16 days passing?
- Is there anything obvious I’m overlooking?
- If I allow ammonia to drop to 0, could I add some cherry shrimp safely in about a week?

I’m mainly trying to work out whether this is just an unusually plant-heavy cycle that needs more time, or whether something genuinely isn’t right. Any opinions or similar experiences would be appreciated.

u/suckadickandfuckoff — 14 hours ago
▲ 7 r/AquariumHelp+1 crossposts

cycled tank, is this normal?

hi everyone. i’ve been cycling this planted tank for around 6 weeks now, all the water tests i’ve done suggest it’s healthy but i have so much algae and growth on everything and was hoping to finally add some life (cherry shrimp and a rabbit snail) to this bad boy today. i’ve googled this a few times and it says all of this is okay for the tank but it doesn’t look great
any recommendations?

u/TopGrapefruit5627 — 1 day ago
▲ 1.4k r/AquariumHelp+197 crossposts

New moderators needed - comment on this post to volunteer to become a moderator of this community.

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u/GaryNOVA — 2 days ago
▲ 3 r/AquariumHelp+1 crossposts

crazy algae growth

So I've had my guppy tank for almost 3 months now and about a few weeks ago my tank has been growing crazy amounts if algae usually at the bottom of the tank and on a rock in the corner. It started with the rock a maybe a month ago, but eventually spread throughout the whole tank. I usually have to clean it out every morning, otherwise it'll grow more and more throughout the day. Is there any way I can stop it? If it helps, I have 3 bundles of Amazon Swords, one bundle of a Java Fern, a piece of driftwood and a moss arch. I took these photos maybe 10 minutes after I cleaned it. Any help would be appreciated!

u/NoCallerId83 — 1 day ago

Fish keepers help!!

Could anyone tell me what is this algea and if its bad for the tank? And how to get rid of it? This tank is few months old now for context

u/Landrastic11 — 1 day ago

Can i put these rocks on my aquarium?

Can i put these river rocks in my 24 L aquarium?

u/D10_01 — 1 day ago

Brown film covering everything in my new 110L planted tank

My 110L planted tank has been running since 11 June and is fully cycled. Stocking is 3 peppered corydoras, 3 Julii corydoras, 2 Amano shrimp, and 2 baby corys.
I’m getting a brown film covering my driftwood, plant leaves, and parts of the substrate. There’s also some small white and black spots on the wood. I do weekly water changes and run the light for 8 hours a day.
Is this just a normal diatom bloom in a new tank, or is there something I should be doing to get rid of it?
Any advice would be appreciated.

u/Worried_Might2590 — 1 day ago

Dealing with nitrites

Hi, so I’ve had this 60L tank put in water since the beginning of june (between 1-5).
I’m currently dealing with a nitrite/nitrate spike.
I’ve done a 1/3 water change 2 days ago, and the levels are still pretty high.
I’ve used a conditioner and bacteria start after the water change.
My question is, should I do another water change soon ? Or should I let it be for now ?
It seems the levels have gone down since the change, but I’m worried they’ll just get worse again.
Any help would be much appreciated.
I cannot for the life of me figure out how to add pictures lol.
It seems as though the nitrites are at about 1, and nitrates between 10-25.
Thanks in advance !

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u/Current_Average7950 — 1 day ago
▲ 4 r/AquariumHelp+1 crossposts

Need help with fin rot 😔

Hello, I’m new to having a tank, we started out with our 5 gal tank, just fake plants, our beta Glubber, and a snail. The snail thrived till I tried switching over to live plants and not only did our snail die but our betas fin rot got significantly worse. Since then we re-did the whole tank, started doing tests, got better substrate, bio filters, cleaning enzymes, half live plants half fake (for now) and a new mystery snail. I have a pothos and some duckweed in the tank rn.

He’s a very active and curious fish (loves watching the hockey game), but his fins are just not healing. I’m assuming it’s because our water is so hard? But not sure what’s the safest way to fix that. Would love any advice please and thank you!

u/Midnabean — 1 day ago

Ghost shrimp changing color?

I got these ghost shrimp a few weeks ago. I read that cuttlefish bone and calcium is good for them and my snails.

I added the calcium rocks and cuttle bone and now the ghost shrimp are changing ???

Is this molt?

I also read about muscular necrosis so I want to be sure its not that

u/panobrownies — 2 days ago

help api general cure

I added api general care in my 40 gal because my tertras have wasting disease. Now my shrimp are going crazy, they are swimming around the tank, doing flips, going to the top, and darting around. Am i accidentally killing them?

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u/ilovestars25 — 2 days ago

How to lower my gH? One too many failed molts this week.

I’m new to keeping Fire Red Cherry Shrimp. Two this week have died to failed molts. My tank has been cycled for about 2 months. My shrimp are about 3 weeks adjusted to the tank. I know added DI water will help but I don’t want that to swing my pH as it’s borderline in the “green”. I’m running cO2 for 8 hours.

Any help or suggestions.?

\*\*Here are my parameters:\*\*

Ammonia: Oppm (0)

\\- GH: 15°dH (+2)
Tank water 15
Faucet water 13
Outside water 13

\\- KH: 11 dKH (+1)
Tank water 11
Faucet water 11
Outside water 11

\\- Nitrate: 10ppm

\\- Nitrite: 0ppm (0)

\\- pH: 6.8pH (0)

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u/Suitable_Analyst9322 — 2 days ago
▲ 29 r/AquariumHelp+2 crossposts

Help

At irregular intervals, I hear a clicking sound that I would now attribute to tension in the glass. There are no crayfish or other noise-making animals in the tank (just *Neocaridina* shrimp, neon tetras, Siamese algae eaters, and ramshorn snails). I am pretty certain the sound is coming from the stand. It’s an old farmhouse-style cabinet/dresser that I reinforced internally with cross-braces under the top panel. I haven't had any issues over the past year, but now the wood has warped slightly in one corner. A spirit level shows the tank is still level, but the silicone mat underneath is compressed in one corner (see photo) other Corners Look fine, and I’m really worried now.

My plan:

- Drain water to reduce weight

- Move livestock to a temporary tank

- Get a new stand designed for this purpose

- Empty the tank completely

- Transfer the tank to the new stand

-...

My question: Is there anything else I need to consider or change in my plan, or am I perhaps overreacting?

Help :/

u/theonlynek — 3 days ago
▲ 3 r/AquariumHelp+2 crossposts

Help with my Marina aquarium?

This is my first time ever setting up an aquarium. I got this kit from my coworker and think I have it ready to go. I turned it on and the filter started going strong, but right as it was about to flow back into the tank, it stopped pulling water. How to fix? Any tips?

u/Glittering_Fudge7706 — 2 days ago

How do you upgrade your tank that's up and running?

We currently have a 29 gallon. It's running great, but I'm itching to make it bigger. Assuming I figure everything else out, how do you make the transition from one tank to the next?

I don't really have a lot of room to have another tank just sitting there cycling until it's ready.

Anyone have a similar situation?

u/mustify786 — 2 days ago
▲ 4 r/AquariumHelp+1 crossposts

Help with cube tank, fish dying

Hello, I got my order of 3 fish yesterday, 2 clowns and a goby. Only the larger clown is alive as of this morning 08:50 and not looking good . Inverts and coral seem fine. Did the aclimation process and all fish seemed fine at first. After adding them to the tank they started to deteriorate. Added the fish to the tank at 14:00. The small clown died 21:00 and the goby 22:00. Both fish started darting around before death. I did two 10% water changes and created as much rippling on the surface as I could, also skimmer running.

Have not had any fish in for 2 months since the first tiny goby got stuck in the rocks and died (I think). Had the goby for a month with no issues and feeding nicely.

The fish store will be open in an hour. What should I get to try to save the clown? Better nitrite and ammonia test and charcoal for the sump?

90l cube tank

Rear sump with rough filter material, bioballs, skimmer.

35ppt salinity

nitrites and ammonia negative

8,2 ph

26,5 C

Lights have been off since adding the fish.

Thank you for any quick replies!

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u/International-Ebb-73 — 3 days ago
▲ 2 r/AquariumHelp+1 crossposts

What’s this worm and best way to remove this algae?

There are always so many tiny babies on the glass that it’s difficult to get the algae off and my scrubber doesn’t work very well anyway on it. Any recommendations? Also, is that worm larva or just a detritus worm? Thank you!

u/Chiacchierona21 — 3 days ago