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Questions tagged [aquarium]

Indoor containers holding water and creatures (fish, crustaceans, snails, etc.). For specificity, consider adding a "freshwater" or "saltwater" tag.

Indoor containers, vivariums, which hold water and aquatic creatures (, crustaceans, , etc.)

Sample questions might discuss set-up, environment , and for residents.

If useful, consider one or more descriptive tags to distinguish aquarium type: , or .

For the purpose of this tag, aquariums are defined as indoor containers of any size. Use for questions about outdoor containers.

Non-aquatic vivariums should use the tag.

637 questions
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Does the shape of a fish tank make any difference?

When I go to the pet store, I see fish tanks that are not only different sizes, but different shapes. For example, there are tanks that hold the same amount of water, but one could be taller than the other, or one has a bowed front, and there are…
Spidercat
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What will keep my nitrates low?

I am trying to give myself a buffer for water changes. Right now ammonia and nitrites are stable, and nitrates rise as expected. I'd like to know what other steps I can take to reduce the rise inn my nitrate levels. I have seen these star things…
anon
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2 answers

What's the name an air-valve that automatically closes for a set period of time to allow air to pass down the line to other valves?

I hope the title makes sense. Essentially what I need is to use a single air pump to aerate multiple small tanks. To do that I can't have the first few valve/air-stones in the entire line use up all the air. Is there a type of non-electronic valve…
D00k13H0w1tzer
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Metals and aquariums

Please do not ask me the "why" for this question, I am not 100% sure myself. I just brainstorm. I know that metals are usually a NO-NO for aquariums - because they can release oxides and other stuff which is harmful for the living things inside…
virolino
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is this overflow system gonna work?

I'm planning to make this overflow for my tank. the goal is to drain from bottom. in theory it will work but in real world i'm a bit worried about the noise that "air in" is going to make and where water level is going to be when power goes off.
ElectronSurf
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Kindly help me choosing right silicone from my mentioned list

I am facing some challenges and need your help and advise. In my country, unfortunately, I don't find Aquarium safe sealant except 2 types. Only what I have seen in local stores are DAP and Loctite Aquarium safe small silicone tubes BUT they have…
Mohammad Asif
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Seeking advice on planted aquariums

My 10 gallon aquarium is documented on the photo below. After the wood sinks completely I want to add a proper substrate and plant some seeds (bought a few online) of various sorts of grass. I also bought natural substrate gravel, but I'm not sure…
Midnight_Blaze
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How to remove mold/algae from the stones in a fish tank?

I've noticed recently that the white stones in my fish tank are starting to have something brown growing on them, which I suspect to be mold/algae. The mold/algae also seems to be slowly increasing over time. How do I remove the mold/algae? And how…
I Like to Code
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Will an airpump increase the CO2 level in my aquarium?

Air pumps (let's say with 200 l/h) slightly increase the level of oxygen in the water simply by making bubbles rise from the bottom of the aquarium to the water surface. Can I expect an (even minimal) effect for the CO2 level as well? I know that…
Kalle Richter
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Help with drift wood for fish tank

I got root wood from a long dead tree in my backyard it's been dead for about three years and the wood hasn't rotted but would it be possible for me to make it safe to put in my fish tank
Gavin Draper
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Treating columnaris in aquarium

I have a 100L aquarium with 11x melanotaenias boesemani and 15x corydoras (5x each of bronze, pepper, julii). A few days ago I noticed several patches of white film on one of the juliis and it seems to me that it's columnaris, based on extensive…
georgiosd
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What are these little creatures in my aquarium?

I have recently noticed these tiny creatures on the glass and other surfaces in my aquarium. What are they, and where could they have come from? They are about the size of a sesame seed and growing. They don’t seem to be harming the fish, and they…
paul
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How to set the temperature on an Eheim aquarium thermostat?

I'm using an Eheim thermocontrol 50W thermostat in my 60l freshwater aquarium. The official manual and dozens of forum posts state that the temperature is set by turning the outer blue wheel to the desired temperature and then correcting it with the…
Kalle Richter
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Is the way I moved my fish to a new tank ok?

Yesterday I got a new tank, I upgraded from a standard 10 gallon tank to a 29 gallon. The ten gallon was over populated so I decided to try and move my fish over as soon as I could. The ten gallon tank had sand as substrate that was a pain to clean…
Dylan Levesque
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How to transport fishes over a short distance/less than one hour?

I wanted to make sure that I figured out the best way to transport fish (e.g. wels, guppies which less than 5 cm body length) for less than 1 hour. I assume that it's no necessary to provide additional oxygen as suggested in How to transport fishes…
Kalle Richter
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