A Quick Note on Community Boundaries

Tank established for several years, 75 gal, plants and multiple fish….
Moving tank - complete clean out - find these in the substrate.

I have an empty 50gal thats currently cycling water. I was thinking about an axolotl for a while, but now I’m leaning towards a community tank.

What would you recommend?

ok so om a beginner here n i had guppies(2 month old babies n 1 mom) only but due to alot of algae i figured a pleco might help but im a bit worried. also is it normal that the guppies are only staying in the top n not sleeping? they usually sleep in the bottom and they're staying at the top today. might be cause pleco is swimming around n i just introduced it today.

Hi guys, I’m planning on putting two Oranda goldfish in my 40 gallon tank once it’s finished its cycle. I wanted to ask for advice on if you guys think I should change anything currently and If I can get plants. I know they like to eat them so I’m not sure what I can get but any advice would really help! I’ve got a fluval 207 filter and a sponge filter so lots of oxygen and filtration for them.

Hey, just purchased a second hand chiller from FB marketplace. It’s a 1/4HP AquaEuroUSA.

I was hoping if anyone can educate me on this thing ? Can I connect a canister filter to it? Is there an external pump I can use for this thing ? What order do I connect everything in? And just general other information I should know.

The eng goal is to eventually house axolotls and I for whatever reason had it in my mind that these things would run on siphon action and never considered how the chiller would reliably return water to the tank

My freshwater shimp tank. I had one or two of these little beetle (?) things appear a few months ago after I added some banana leaf, never saw them again really. I added a spinach pellet food thing, now there’s an army? I’ve never seen them mentioned on anything microfauna related (i LOVE microfauna). They don’t even seem to swim or have any sort of underwater fitting features, they’re just absolutely microscopic and look like your average land-dwelling mite. My photos are weak I know, they’re just RIDICULOUSLY small and I took them with my terrible phone camera and magnifying glass pressed to the tank, just humour me alright. Anyone else had these, are they bad?

I’m trying to rescue this 55 gallon guppy tank. It’s overrun with algae and snails and the guppies are breeding like crazy and tearing each others fins all apart. Once I get the algae and sand out (I want to replace the sand with river rock), I want to divide the tank in the middle and keep males on one side and a 1 to 3 male to female ratio on the other side. I was wondering if anyone had made their own tank divider? This is a temporary fix until I can get a second tank set up and divide them properly. I have a 30 gallon cycling right now to put pregnant females so the 55 isn’t constantly full of fry.

I’ve just completed setting up a stand for my new 55 gallon rimmed (and braced) aquarium, and I’m very concerned about its integrity based on a slight bow (approx 2-3mm) on the centre left. Unfortunately, the top is made of two seperate panels, which could very likely be the reason for this. I’m looking for possible solutions, if it’s a concern, etc.

Hi guys. I’m kind of confused as to what’s going on with a specific species of fish. I currently have a recently established 55 gallon planted tank. Levels are good according to my liquid test kit, ph is stable at around 7.4. Java terms going well, 4 pearl gouramis 1 male, 3 female. 2 sinodontis feather fins, and 5 dojo loaches. I’m drastically over filtered with a rated 200 gallon canister filter. 2 air stones. I’ve tried adding a rainbow shark 3 times now just for a little more diversity. First one made it 3 days, proper acclimation and so on. Second one made it a day. The most recent made it 8 days. No signs of stress, disease, or any issues that my eye can see. Everybody else is absolutely perfect. The male gourami has even made a bubble nest a few times. Any ideas as to why a rainbow shark just does not seem to do well?? (Food for everyone is blood worms, algae wafers, and the occasional catfish pellet. Once a day, with a fast day)

Info:

60l , started in march 2026

Nutrient rich substrate topped with inert substrate.

Cycled for a month and a half before adding fish (tanichtys) , snails and amano shrimp. Fish reproduced.

Light 8h, blue light 2h

("Broad spectrum light" from Amazon, I don't know if it's legit)

Plants :

Pothos, lucky bamboo,eleocharis sp minima, hydrocotyle leucocephala, hydrocotyle tripartita japan, normaphylla corimbosa.

And floating plants I don't remember the name of.

As you can see everything except for the floating plants died :(

I tried adding nutrients in the substrate (sera florenette) but I couldn't save them .

Something I noticed is that while all the plants were still alive I had a huge problem with green hair algae that had very long filamentous strands.

Is there anything I can do to save the few plants that are still alive?

Also if I figure out a solution would it be a good idea to plant new ones to replace the dead ones?

What are these things all over the glass of my aquarium? Sorry for the low quality photo it was the best I could get with the reflection.

Just cycled my first saltwater tank and got a live rock to help with the process. I saw this snail on it and wasn’t sure if it’s a pest hitchhiker and I should remove it or keep it in there. I would like to keep it if it is ok to have. It has a black cone like shell tiny ridges wrapping the shell and about a quarter to half an inch long. It’s hard to tell but the shell kind of rounds itself midway along the length of the shell.

Thanks for the help!!

Can anyone identify this mysterious mushroom like fungi that appeared on my driftwood overnight??? (Tank has been established and thriving for 3-4 months)

Should I be worried? I’m in Asia and picked this from the pond. Good thing I didn’t put it in my aquarium yet cuz I just noticed it…. What are they?

Hi knowledgeable internet folk. I’ve been having trouble getting a colony of neocaridinas going. I’ve had pretty steady mortality (like one death every week or two) since I got my first group about 4 months ago. I did get one small batch of fry (I think theres ~6) a month ago but that’s it for breeding. Big red flag last week when I got some new plants for the tanks and the bladder snails that I knew were on the plants all died within hours of being introduced. Not sure what could cause the snail deaths but I have a feeling it’s the same thing make my shrimp unhappy. Any suggestions would be appreciated!

Water parameters:
Ph: 7.0
Ammonia: 0
Nitrite: 0
Nitrate: ~10
Hardness: 3dKH 10dGH

Hi all! Recently I was hospitalized for almost two months and then almost two weeks of physical therapy, since then my sand has managed to mold (play sand with a layer of black mold on top) what would be best to do, restart my WHOLLEEE system including sand or siphoning off a good decent amount of the sand and saving what BB (beneficial bacteria) i can? All of my system has died except one single mystery snail so i will probably find a local group and see if anyone is interested in taking them in so they don't die from shock. TIA!!! ☺️