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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.

7
votes
2answers
1k views

Would a small amount of bottled water mixed in with an aquarium harm the fish?

This is kind of urgent - I'm watching someone's dogs currently because that is what I am experienced in but they also have an aquarium. I have little to know experience with fish and I did warn the ...
2
votes
2answers
74 views

Are these fish eggs..and if so what should I do with them?

Are these eggs and if so what should I do with them?
3
votes
2answers
51 views

Can snails and betta fish cohabitate?

So my mom just brought home three snails home. One for me, and two for my brothers. I set the bag in the water for 20 minutes, and then put the snail into the tank. My female betta fish has been in ...
3
votes
1answer
39 views

Is a carbon or cartridge filter necessary in an aquarium with a simple biofilter?

I'm trying to setup my first aquarium, and in the process I've been reading all about the nitrogen cycle and properly cycling a tank to ensure there's bacteria present to work on the ammonia and ...
10
votes
1answer
106 views

How stressing is it for fish when someone taps/slaps their glass?

Everything I've read says you shouldn't tap an aquarium because it startles the fish, and that's bad for their mental health. I've been satisfied by that argument. As of late, my toddler has started ...
2
votes
0answers
35 views

How do I tell if my goldfish is pregnant?

I'm new to keeping fish. I picked up 3 comet goldfish a couple of months ago. They've been living in the same tank and one is getting bigger, way bigger than the other 2. Is it pregnant? How can I ...
2
votes
0answers
34 views

Starting up a canister filter that has been off for a while

We prepared an Eheim canister about a week ago and had also put some tank water in it but, because of a series of setbacks, we haven't been able to start the filter in our new tank. We are still not ...
4
votes
1answer
42 views

questions about leveling and positioning a 4 foot fish tank

We are beginners but have ended up buying a fairly large (4 foot) fish tank and have some questions about setting it up. we are worried about making sure it is level, as a lot of videos say this is ...
3
votes
1answer
107 views

Aquarium Salt and Pink Salt

Is Himalayan pink salt okay to use in fish tanks? I have read that aquarium salt is good for conditioning water but I was curious if pink salt would do the trick as well?
2
votes
0answers
27 views

Green water after refilling dry tank with no fish

Several months ago, I moved to new city and had to drain my 20-gallon tank and give away my fish. The tank sat empty (aside from the gravel) for several months. Last week, I decided to fill it back up,...
6
votes
0answers
53 views

How can I remove waste from a tank with fry?

I have surprise fry in one of my tanks (I've counted 8 or 9 so far). I've removed all the adults into a separate tank, so the fry won't be eaten. I have apple snails in the tank as well. These ...
-2
votes
1answer
92 views

Can I use a toilet flush valve as a water change system?

I want to know if I can use a flush valve as part of a water change system. I could pair this with the floating thing that automatically fills up the tank, and this can also act as an overflow, so I ...
1
vote
0answers
17 views

Plants for dirty/algae ridden goldfish aquarium

I have a 20gallon/70litre freshwater aquarium with two comets now about 2inches each. The aquarium gets dirty with algae over the glass and all the plants very quickly after cleaning. This is nothing ...
1
vote
0answers
18 views

Completely Self Sustaining Aquatic Environment in a Sealed Jar

I recently got the idea into my head to create an entirely self sustaining aquatic environment in a (large) sealed jar. I'd like to include: A layer of soil and gravel at the bottom A large number ...
3
votes
0answers
37 views

How to get a good picture of pet fish?

It is often important to include a photo of your fish in your question. Based on some of the photos that have been provided this is not always easy. What are the steps to get a clear, good quality ...
1
vote
0answers
15 views

Is my female guppy pregnant? About how far along if so. I just bought her a week ago [duplicate]

I purchased this female guppy about a week ago and I think she’s pregnant. If she is how far along do you think she is? Is it true they will eat all of their babies?
1
vote
1answer
60 views

Planted Nano Aquarium Experiment

Material several 750ml cylindrical glass containers: with and without top cap different types of substrates: gravel (small to mid-size grains), sand and fertilized soil for aquarium (neutral Ph) ...
4
votes
1answer
37 views

What are normal pH fluctuations, and what could be causing extreme fluctuations?

I measured my pH last night. One tank was <6.2. Another, >7.4. And the last one was 6.8. This morning, about 12 hours later, they're all measuring <6.2. I've added nothing but food to the water ...
2
votes
0answers
27 views

Air pump selection

I'd be really thankful if anyone who owns any of the air pumps mentioned in this article https://fishtankclub.com/aquarium-air-pump/ could tell me which one is the best, from either personal ...
5
votes
0answers
106 views

Why did this fish kill my Kissing Gouramis?

I got two of these recently, and they killed my Kissing Gouramis. The shop owner said that they would be compatible. I don't know what kind of fish it is, nor what would have caused them to kill my ...
-2
votes
1answer
143 views

Is my tank overstocked with Goldfish?

Is this tank overstocked? There are many baby Goldish and a couple of adults (some not visible in the dark area). According to some people it should be OK, others say that goldfish need 40gal (80l) ...
2
votes
0answers
25 views

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 ...
2
votes
2answers
327 views

Help. A common goldfish living in 3 gallon tank

My wife got a goldfish from our pre-school. It came in a "fishbowl" the size of a large coffee cup and a tiny ziplock with fish food. It was severely stressed: fins clamped at his side, sunken belly, ...
1
vote
1answer
29 views

Can spider habitat be repurposed to be used as an aquarium? [closed]

Can an aquarium which was used originally for a spider habitat, be repurposed for creating a fish habitat? Is there any particular way it should be cleaned, if it can be?
3
votes
2answers
71 views

Need help choosing a chiller

Given that I live in a very hot place where the temperatures get extremely hot (especially during the summer) and I have a 55 gallon tank with a few angelfish, an aquarium chiller is highly necessary. ...
4
votes
1answer
58 views

Can I Use Rainwater to Generate Reverse Osmosis Water for Fish?

I currently use half Reverse Osmosis (RO) water, half tap water & dechlorinator for my aquariums (probably closer to 75/25) but it takes a lot of water to generate enough RO to do water changes ...
3
votes
1answer
58 views

How many pets can I keep in an aquarium?

I recently got a 5.5 gallon fish tank and am curious about the quantity of animals I can have in the tank. I currently own six fish. I don't know their proper names, but I own one bottom feeder fish(...
0
votes
0answers
29 views

When is my Platy fish due? [duplicate]

I just got my female Platy yesterday along with a male and she is pregnant, but I don’t know for how long? I did some research and it looks like her stomach has squared off, but I don’t know if she ...
4
votes
0answers
118 views

Is there a way to repair apple snail shell damage?

My snails have damage on their shells. I think they had a calcium deficiency, and ate each other's shells to make up for it. I've changed their diet, and things seem to be getting better. Now I'm ...
4
votes
2answers
45 views

How do I read my new tropical fish thermometer?

I bought some last minute items for our tank before we started to get any fish, and one of them was a thermometer. We didn't look at it closely until we got home, and then realised we had no idea how ...
4
votes
1answer
120 views

What is the best way to clean soil substrate in my aquarium?

I recently set up a tank for a Betta sorority (I'm letting it cycle till we have everything) and as a substrate we have dirt. I was under the impression we just clean it like sand using a wider gravel ...
1
vote
0answers
114 views

I think my Betta has dropsy but I'm not sure?

I'm really worried about my dragon scale Crowntail Betta. I realised that in the last couple of weeks he has had a bump, like in the picture, on his body on both sides. He has started to curl his ...
3
votes
0answers
41 views

Betta has a large black spot

My Betta has a large black spot on him and I don't know if I should be concerned about it or if it's just a natural birth mark I don't think it is but I can't find anything online about ITV so I need ...
1
vote
0answers
40 views

Which light is good for aquarium turtles, UVA, UVB, UVC? [duplicate]

In continuation of my question Do aquarium turtles require basking everyday? I will purchase a UV bulb for turtles but which one should I purchase UVA, UVB or UVC? How much distance should I keep ...
2
votes
2answers
89 views

I'm wanting to have a female Betta sorority and Corydras- would that be over crowding?

I have a 3ft tank, it's been cycling for about a week so far. We want to have a female Betta sorority(at least 5 females) and at least 2 bottom feeders (Corydras). Would this be considered ...
0
votes
0answers
28 views

When do I know they're ready to give birth [duplicate]

How do I know when my platy fish (Xiphophorus variatus) are going to give birth in the next few days?
3
votes
1answer
43 views

Can I put new born platies with neon tetras?

I have 4 new born platy fry. Can I put them with neon tetras in one aquarium?
3
votes
2answers
49 views

Juwel Filter Pump Too High?

We have a Juwel Lido 200. The black filter box was on the right side of the aquarium; but we wanted to move it so we removed the silicone and re-siliconed it on the left-side of the aquarium instead. ...
3
votes
1answer
42 views

Noisy canister not pumping

I've had this Sunsun 304b canister for a few years now. It was very quiet originally but in the last few years has gotten noisy. And then two weeks ago it stopped pumping suddenly making a loud ...
2
votes
1answer
151 views

Do plecos eat fish poop?

I'm wondering if plecos will eat the poop of other fish, specifically Molly fish. I've heard they eat algae growing on the aquarium walls but I don't know about what else their diet may include. I'm ...
3
votes
1answer
51 views

Co² supply with Kh 0 - ph effect

I couldnt find anything online so im asking the question here. I use destilled water for some species of crabs which should have a carhonate hardness of 0. Now i want to add plants to the aquarium ...
0
votes
2answers
44 views

My aquarium heaters don't appear to be working?

We had a power outage for 2 days from a storm, and since then my two aquarium heaters don't seem to be working( I know it takes a couple hours to warm up & the light only comes on and off when ...
7
votes
4answers
349 views

Can a house get too hot for tropical fish and what precautions could we take?

We really want to get tropical fish but there's a problem. In the state we live in it can get as high as low 40*C's in the summer and worse, we don't have insulation installed in our house. Would it ...
1
vote
1answer
91 views

Fantail goldfish looks bloated - Does this mean he is sick?

I bought two goldfishes last summer and they've been doing great in my 10 gallon tank, but I am starting to wonder about one of the goldfish. I don't know if he is sick or in pain or what. When I ...
4
votes
1answer
93 views

Yellow Hawaiian Tang Bullying and Killing Everything in the Tank!

A little info about my tank, I have various soft reef, beginner reefs. The tank is 55 gallons in size. A couple months ago I bought a Yellow Tang. Upon purchase the Tang was an adolescent. I also ...
5
votes
1answer
392 views

Best way to adjust fish tank water chemistry

I am a new fish owner with 4 tetras & 1 pleco. My tank is 10 gallon with an Aqueon QuietFlow LED 20 PRO Aquarium Power Filter The tank has been running for +3 months and it gets a 40% water ...
1
vote
1answer
821 views

What do I do with my dead fish? [duplicate]

I came home earlier to find that my fish had died. I wasn't expecting this to happen as he was supposed to live for a really long time. So this is a situation that wasn't thought about much. I do not ...
1
vote
2answers
205 views

Why are my fish always scared?

I have a tank with four 1.5" Shubunkins, which I've had for one month. There are no other fish. It is a glass-bottom tank with no substrate (for easy cleaning), and has many floating plants for them ...
2
votes
0answers
25 views

Is my guppy pregnant…? How do I know how far she is? [duplicate]

I can’t tell if my guppy is pregnant. She keeps floating in one spot and rolling around on the rocks in the tank. She’s also trying to attack the other 2 fish in the tank and her 3 one month old ...
3
votes
1answer
92 views

3 tetras and a betta

I have just purchased a 10 gallon fish tank. I have one male betta and 3 tetras. Two of the tetras swim around together but one of them stays at the bottom of the tank in the corner and looks like ...