Questions tagged [aquarium]

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

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Female Guppy Health Question

I went to feed my fish and I always check on my female guppies because they are the smallest in my community tank. I saw that one of my female’s gravid spot was a “odd” color to me. It is usually a ...
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1answer
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I want to be prepared for my fish

For some time, I've been obsessed with the idea of getting a pet. It took me some time to decide which one I really want, and I decided on fish. However, it needs some proper preparations like an ...
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2answers
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Aquarium lighting systems that follow seasonal changes?

I've been looking at some of the automated aquarium lighting systems that turn on and off automatically at certain times of the day (and even mimicking the gradual change of sunrise/sunset). But these ...
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1answer
2k views

3 Gallon Saltwater Aquarium

I'm pretty experienced with freshwater aquariums, but I would like to set up a small 3-gallon nano saltwater aquarium to keep a few corals, a shrimp, and one fish. My question is: Is this possible? ...
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1answer
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What is this alien in my shrimp tank?

The tank is set up since nearly two months now. The shrimp have been in it for around four weeks. One small algae eating fish and one big and accidentally some small snails are living there too. But ...
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7answers
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How to anchor aquarium plants?

I have a number of live plants in my aquarium. One of them - an oxygen weed - frequently works its way loose from the gravel in which I've planted it. I find myself often having to retrieve bits of ...
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0answers
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White patch and spot on my goldfish?

One of my goldfish, which I've had for 3 months, suddenly got a white patch on the top and a white spot on its left side (the yellow-black one in the picture). I just noticed it today, but I'm sure it ...
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Is My Guppy Sick?

My adult guppy has been acting strange in my opinion. He has been inactive unlike the other guppies and platy fish in the tank. I’ve noticed that he has been swimming in place at the top of the tank. ...
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Digital pH Tester - fish tank

Is there any digital pH tester on the market at all? I've done a search around and pet-stores and the usual companies (Fluval, API, etc) don't sell them as far as I can tell. Some companies I don't ...
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Best Brown Algae Eaters for Freshwater

I have brown algae growing in my tank and I was wondering if Cory Catfish could clean it. If they could not, what other fish, besides shrimp and plecos, could clean the algae? Just a note, my tank is ...
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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 ...
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How much vertical space to keep african dwarf frogs from jumping out?

I have a 20 gallon (76 liters) long tank with a lid to keep my african dwarf frogs in. I'd like to eventually move them to a bigger tank without a lid. Considering the maximum water height ...
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1answer
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How do I remove hair algae from my fish tank?

I have a 5-gallon tank that has a betta, a few live plants, and a hiding place that I have had up and running since August, the fish has been in there since September. A few weeks after adding the ...
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Fins coming out like tearing apart from body of Betta [duplicate]

It's been 2 months since I brought the betta and recently I noticed that it was lying on the bottom being very inactive; seeing this, we changed it to a bowl and changed the water, added almond leaves ...
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1answer
225 views

What is special about an aquarium using no CO₂, no fertilizer and no filter?

A random video on Youtube presents itself with the following title: 24th Month – (Carrot Feeding Frenzy) NO filter, NO CO2, NO Ferts 5 Gallon Nano Tank Presumably having no filter, no CO2 and no ...
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Why are undergravel aquarium filters no longer popular at stores?

I recall that when I started fish keeping, there were basically two choices for filtration: under-gravel filters and hang-on backs. There were also expensive canisters for people with large setups. ...
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1answer
144 views

Can an understock tank be under filtered?

I asked this question a couple of month ago, I suggest you read it first so you know the context. I have a 15 gallon tank with 10 neon tetras, 4 zebra danios, 2 Endlers and a bunch of red cherry ...
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1answer
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How much water do betta fish need?

How much water do betta fish need?
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3answers
435 views

How can I reduce feeding my fish to keep my snail population under control?

I posted the other week about some snails I had noticed in my relatively new tank; where I was warned that it would be wise to get the snail population under control while I can. Sure enough, the ...
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1answer
6k views

Are underwater snails strictly bound to 'under' the water?

I recently bought a little aquarium, which I stocked with live plants to create a sort-of-natural environment. I haven't stocked the tank with any fish at the moment, but I have noticed some tiny ...
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How much space does a fish need?

I am wondering if there is any accurate way to determine how much space any particular fish needs. I have heard things like 1 gallon per inch of fish, but this cannot be accurate as a betta (2.25 ...
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1answer
53 views

Can't reduce my nitrite/nitrate levels, any help appreciated!

I set a 60 litre tank up and run it for 3 weeks, all water parameter levels fine. Added 4 fish, left 4 week's all fine. Added 4 fish again and 5 days later fish started to die. Checked levels and the ...
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1answer
13k views

How many days does it take an ammonia spike to occur?

I recently bought a new aquarium along with four small tiger barbs. I'm currently learning how to cycle the water so I was wondering how long can the fish live in the unchanged water before it needs ...
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3answers
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Filtered water for my fish tank

My kitchen tap is filtered with a Pentek 20 micron filter which reduces chlorine taste and odor (completely removes chlorine taste); it is a granular activated carbon filter. My question is, can I use ...
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2answers
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How do I continuously change fish tank water?

Do fully automated fish tanks exists or are possible DIY with Automated Water Change from running tap water, like a toilet flush such that I can replenish half the water on one button push? This will ...
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3answers
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Betta fish fin tear or rot?

Does my fish have fin rot or is the tail simply torn? I got him a few days ago and his fins were a bit like this, I'm unsure if it's gotten worse. He is in a cycled 16L tank with a filter, heater, ...
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If i have sand substrate will my good bacteria beneath the sand still get fed?

I just put power sand, pumice for living bacteria, then on top of it hard sand, then the toppest is full the finest granule sand. I filled the water and now wait to cycle the tank. I wonder whether ...
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2answers
230 views

My molly is nipping at one of the cherry barbs in my tank. What should I do? The barb is losing colour

This has never happened before. My fish are in a 20 gallon (76 liters) tank, they've been fed the exact amount every day, and none of them have had problems before (other than another incident with my ...
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3answers
385 views

How often to clean fish tank with bottom feeders

We have a 29 gallon fish tank with 3 snails, 3 shrimp and 3 catfish. We also have moon fish that I read like to eat algae. We have had the tank a couple of weeks and it looks really clean. I also ...
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6answers
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How can I decipher how aggressive my Betta is?

I am thinking of adding tank mates to my tank environment. I already have a Betta fish, and am thinking of adding a few more different types of fish like Neon Tetras. However, after reading the ...
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1answer
8k views

My fish are disappearing :(

I have a 10 gallon tank I had 3 guppies and some snails. Only 2 adult snails and some babies. I had 3 guppies the night before and the next day one of my guppies disappeared. This has happened before ...
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2answers
35 views

Sponges for mechanical particle filters for aquariums

A colleague just started the fun with dealing with a big aquarium (his first). He asked for my advice, and I provided my best. However, being both engineers, we started discussing out-of-the-box ideas ...
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2answers
146 views

What happened to my clownfish?

I’ve had a nanotank for about 2 years now, and today something really strange happened. Yesterday, my clowns were totally fine, swimming and eating like normal. Today I went to feed them this morning ...
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Goldfish skin around the intestine area is gone and stomach looks to be caved in

This is my first time posting so I’m sorry if I made any mistakes with my post. I think I’m going to lose one of my goldfish. About 2-3 weeks ago both of my goldfish (I only have 2) developed ammonia ...
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Can crushed egg shell be used as a substrate for aquariums and terrariums?

A recent answer stated that egg shell can be crushed and used as a calcium supplement in Do-it-yourself food. This got me relating it to crushed coral, which is commonly used as a substrate. I've ...
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79 views

What should I do to my goldfish swimming on surface?

I am new to goldfish, it is swimming on surface like gasping for air every 3 minutes or so. So, I did 40% water change, using drinking water just now. Should I do something else? There is 24/7 filter ...
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1answer
46 views

Can I fertilize aquarium plants in a similar way to garden plants?

For most fertilizers used with garden plants, they are labeled with percentages of nitrogen, phosphorus, and potassium. Nitrogen is good for helping the tops of the plants grow nice and green, the ...
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1answer
30 views

How to safely get iron to aquarium plants?

I have a planted aquarium that I've been working on for a while and I'm still trying to get my plants to grow nicely. From doing a bit or research, I believe that my aquarium plants may need ...
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0answers
82 views

What should I do about my Siamese algae eater fish missing?

I put 1 Siamese algae eater fish in my 10 gallon (38 liters) tank aquascape with no fish yet, last night, until now it's been missing. What should I do?
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What do I do about nematodes (roundworms) in aquascape?

I have 10 gallon (38 liters) tank aquascape, no fish yet, I noticed around 20 nematodes swimming around, can I just put platy fish and shrimp there? How do I get rid of the nematodes?
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Pregnant platy, what should I do? [duplicate]

I have a platy that is pregnant. I used to have her outside in a little pond (a bath tub), but put her inside by herself in a 5 gallon (19 liters) aquarium, so the babies don't get eaten by the other ...
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1answer
453 views

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

I bought two goldfish 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, in pain or what. When I bought ...
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2answers
232 views

My goldfish is dying

I have had 2 goldfish for 2 years in my aquarium. This one was good last night. I don't know what happened today it is somehow floating on side with little movement, like sleeping. I put it outside of ...
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2answers
47 views

How to identify metal toxicity in aquarium

Related to this question: If I start experimenting with metals for aquariums, how can I detect that the metal is causing the problems? I want to clearly identify the metal toxicity from wrong pH, ...
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2answers
101 views

Problems keeping stable pH in aquarium

I've had some fish deaths lately and paying attention to water params, I've gotten a little concerned about my pH levels. My tap water comes out of the tap with a pH of around 7.6. After aging it ...
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1answer
1k views

Aquarium filter… what's the order?

Yesterday I bought a filter (top filter): a Sea Star HX-1480G, with F.Max at 2800L/H (which means that it has a flow rate of 2800 liters of water per hour). I installed 1 layer of a polyfiber pad at ...
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1answer
132 views

What is the life expectancy of Tarebia granifera?

A few days ago I found a few snails in my aquarium. As it looks like it seems they are of the Tarebia granifera species. When I looked them up I found quite a few things about them BUT one thing I ...
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2answers
97 views

How often to do water change for betta fish

How often should I be doing water change for my betta? My wife seems to think it should be done pretty often.
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2answers
821 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 ...
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2answers
58 views

Can it harm my water pump if I limit the input with a valve?

I'm using a water pump for an undergravel filter with 300 l/h (Eheim universal 300). If the filter is blocked because or irregularities, the pump starts to suck air because water isn't sinking fast ...

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