Questions tagged [water-parameters]

The physical and chemical aspects of an aquarium's water that affect the animals living within it. Please provide specific details of what spieces are inhabiting the aquarium and include their respective tags. Common examples of water parameters include pH, temperature, salinity, nitrogen wastes content, general hardness (GH) and carbonate hardness (KH).

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How to change which water conditioner I'm using

I have two tanks: my ghost shrimp tank is using Tetra AquaSafe for Bettas water conditioner (the tank used to also contain a Betta fish, but no longer does). My Betta tank is using Seachem Prime water ...
EJoshuaS - Stand with Ukraine's user avatar
1 vote
1 answer
180 views

Fish in rainwater outside

I saw an answer to a question about CO2 addition, and it states that fish themselves can make water from rain acidic (I assume they do it by breathing out CO2). Now I am thinking about my small pond ...
Allerleirauh's user avatar
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2 answers
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Is the injection of carbon dioxide into a planted aquarium a detriment to fish living in it?

From the start, thank you for your time and consideration. Whilst planning a planted aquarium setup that would include CO2 injection, I stumbled across an article about possible behavioral ...
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1 vote
0 answers
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How to get rid of black hair algae?

My aquarium is infested; it's on the plant leaves/pebbles/glass. I tried to remove everything manually but it soon bloomed again, big water changes, shortening the lighting time, but no success. It ...
maazza's user avatar
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6 votes
3 answers
470 views

Why do my Betta fish keep dying?

I got my first Betta fish (name: Dream) back in September of 2020, he was the first pet I've ever owned and it took me a little time to be able to get him a proper home. But after educating myself ...
Hailley Husson's user avatar
3 votes
1 answer
5k views

Common goldfish with "bleeding" around face, gills and fins

I look after two common goldfish in a 56L filtered tank with an airstone for additional aeration. Over the past two days, one of the fish has been appearing to be sick, suffering with what I can only ...
Thomas Russell's user avatar
2 votes
0 answers
53 views

Color change in guppy

My guppy looked pretty healthy and shiny just three days ago: And yesterday... it just darkened. The scale pattern just got so dark all of a sudden. Should I be worried? And this is today:
Sharmishtha Nath's user avatar
2 votes
1 answer
2k views

Fish swimming with mouth always touching the water surface

I have a fish bowl and they are all swimming with their mouth touching the water surface, almost always. Are they hungry? Do they suffer from insufficient oxygen concentration in water? Is the water ...
Megidd's user avatar
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-1 votes
1 answer
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Betta dying help

I forgot to save the old water from when I cleaned my betta’s tank and now he’s floating at the bottom. What can I do? I have already tried putting my guppies’ tank water in to do half half and it’s ...
Mariah's user avatar
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3 votes
0 answers
28 views

How long should I leave old filter in new tank after installing a second, new filter to replace the old one? [duplicate]

Hi I started a tank a week ago with 3 guppies in my daughter's room, but the HOB filter was too loud, so I have now changed to Fluval U2. I have both filters in tank now since yesterday, but my ...
jojo's user avatar
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2 votes
1 answer
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Female guppies are fine, but male is sick

I recently got a 54L aquarium and stocked it with 4 small guppies - 1 male and 3 female. Initially they all seemed to be doing fine - eating, very active within the tank etc. The male looked great ...
Jsk's user avatar
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1 vote
2 answers
255 views

Why is my oranda goldfish gasping at the surface?

I have 110 gallon (420 liter) tank, which contains 1 ranchu measuring 13 cm, 1 ranchu measuring 10 cm, and 1 oranda measuring 8 cm. The oranda is gasping for air, while the other fish seem fine. ...
Dini's user avatar
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1 answer
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Fish tank keeps becoming cloudy with a green tint

My friend texted me that her 30 gallon (around 114 liters) fish tank keeps becoming cloudy. She has eight small fish in the tank, which means that her tank is not overcrowded. She told me that after a ...
Anonymous's user avatar
1 vote
1 answer
344 views

How to maintain a snail tank without a filter?

I have received a rabbit snail, two golden Incas, and a nerite. I only have a 10 gallon tank and my parents will not allow me to get a filter for it. I am a first time keeper and very worried about ...
Jay's user avatar
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5 votes
1 answer
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What is special about an aquarium using no carbon dioxide, 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 ...
JonathanReez's user avatar
4 votes
2 answers
237 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 ...
Lisa's user avatar
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1 vote
0 answers
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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 ...
Dini's user avatar
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3 votes
0 answers
145 views

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 ...
Cece's user avatar
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1 vote
2 answers
613 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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2 votes
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Nitrates spike right after a 50% water change (ammonia,nitrite and nitrate readings were all zero before it)

Need help in a situation I'm a bit puzzled with. I have an established, 3 foot (90 cm) bare aquarium with discus. I have added a few plants in the last 3 months. Once the new plants have adapted to ...
Muhammed Iqbal's user avatar
2 votes
0 answers
55 views

Distilled water for misting my tree frog enclosure

Is it ok to use distilled water to mist my treefrog enclosure, but give it water with minerals in it for the water Bowl?
Froggy's user avatar
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0 answers
29 views

Efficient aquarium cooler [duplicate]

I wonder if it'd be a good idea to cool an aquarium with an external source of water, e.g., pool water. Because my tank runs hot in summer (~30C) and needs to be brought down to 25C, I was thinking if ...
John M.'s user avatar
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1 answer
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Is my fish suffering from fin rot or is this just a sign of wear and tear?

I've had this goldfish for around 2 years now, and have no problems with it at all. I changed it over to a bigger tank (22 litre) around 3 to 4 months ago, and until now have had no issues. The tank ...
Josh's user avatar
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2 votes
1 answer
110 views

Why are my 6 flame tetras not swimming like normal?

I have a 29 gallon aquarium with 6 flame tetras, 2 smaller mystery apple snails and 2 other bottom feeders (brown, spotted, with dorsal spike and main fin spikes). Usually I see my 6 flame tetras ...
Morgan's user avatar
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2 votes
1 answer
151 views

Can a shrimp be a pet?

I want to keep shrimp as a pet, but it would always be dead in about 1 or 2 days. I read lots of information and I know that it is lack of dissolved of oxygen. How to get the water full of dissolved ...
daotian's user avatar
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2 votes
1 answer
104 views

New betta problems - I was unaware of cycling before new tank

So I am experiencing a plethora of issues with my new betta. I hope he makes it out okay. I was unaware of the cycling process before putting him into the new tank. It's small (1 gallon) and temporary....
Mtow92's user avatar
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3 votes
2 answers
739 views

Cooling aquarium with aluminum heat sink

Summer is approaching again. Last summer, I had a lot of trouble keeping the temperature in my aquarium at 30°C. My fish prefer 21-24°C, but I couldn't get it any lower than 30. So I want to avoid ...
HoneyBadger's user avatar
3 votes
2 answers
98 views

Can I fill my aquarium with the water from a purifier?

I only have a bore well in my home, so I bought an 8-stage water purifier with RA and UV, which adds minerals to the water. The final water TDS is 44. I'm keeping tropical fish, such as guppies and ...
Ashiq M's user avatar
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0 votes
4 answers
301 views

How to raise PH in RO water? (with chemical compounds no commercial products)

I am using RO water for my newly started 100 liters aquarium and it results in a pH value of 6.0 to 6.2 which is too low considering that KH is 0. In this case, I need something to raise pH (and KH ...
Jibrilat's user avatar
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3 votes
2 answers
1k views

New GloFish are staying at top and sides of tank, not swimming around

I just bought three GloFish at PetSmart and put them in a tank I had ready at home. One of them stays at the top, sometimes it's two of them. The others stay near the wall. Petsmart said that my ...
Francisco's user avatar
3 votes
1 answer
20k views

Why does my nitrate level always read 0?

I have the following tanks: 5 gallon, 2 months old - housed betta and shrimp 10 gallon, 2 weeks old - used established media to seed aquarium alongside cycle and beneficial bacteria 3.5 gallon - ...
Bri Evans's user avatar
0 votes
1 answer
87 views

What’s wrong with my Betta fish?

I can’t tell if it’s a fungal disease, but he lost all of his color. My sister never cleaned his tank so I think that might be the reason behind it, but I don’t know what disease he has so I have no ...
S. Whiye's user avatar
3 votes
3 answers
131 views

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 ...
Stephen's user avatar
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4 votes
1 answer
349 views

Fish dying despite apparently fine water parameters

We have a 40 gallon (150 liters) tank with an established nitrogen cycle. We went several months with just 1 three-striped cory and 3 gold dust mollies. The tank has its own filter that came with ...
Michael's user avatar
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2 votes
1 answer
1k views

Will pets stores test my aquarium water?

If I have a fish and I don't have the skills and/or supplies to test the water in my fish tank, can I take a sample from the fish tank to the fish/pet store to get tested? If yes, what if any special ...
James Jenkins's user avatar
9 votes
2 answers
3k 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 ...
fishnewb's user avatar
4 votes
1 answer
433 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 are bacteria present to work on the ammonia and ...
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6 votes
3 answers
117 views

Is the filter change necessary?

My Betta, Neptune, lives in a BiOrb FLOW 30 tank which has a spongy filter material sitting on top of charcoal pellets. I was changing it monthly but got behind and the current filter is going on 3 ...
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4 votes
2 answers
6k views

Massive koi death in pond, without an apparent reason -- need help!

I am still experiencing unresolved problems. Shortly after 5/1/2018, I lost all of my koi due to a huge ammonia spike above 8.0ppm. I did multiple water changes to no avail, including a 100% water ...
Franz's user avatar
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4 votes
1 answer
1k 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 ...
Richard C's user avatar
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6 votes
3 answers
458 views

CO₂ supply with KH 0 - pH effect

I couldn't find anything online so I'm asking the question here. I use distilled water for some species of crabs which should have a carbonate hardness of 0. Now I want to add plants to the aquarium ...
Herrsocke's user avatar
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6 votes
1 answer
3k views

Best way to adjust fish tank water chemistry

I am a new fish owner with 4 tetras and 1 pleco. My tank is 10 gallon (37.8 liters) with an Aqueon QuietFlow LED 20 PRO Aquarium Power Filter The tank has been running for over 3 months and it gets a ...
Marinaio's user avatar
  • 201
3 votes
3 answers
3k views

Why do my Glofish Skirt tetras stay on surface after 30% water change?

I bought 7 Glofish Skirt tetras 3 weeks ago and today was the first time I've changed 25 - 30% water for them in 10G (38L) aquarium. Replaced water was tap water warmed for few hours and treated with ...
YMC's user avatar
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2 votes
1 answer
2k views

Why do I see gas bubbles raising from plants after water changes?

I have a 60 l freshwater aquarium. After water changes I see plants producing gas, which raises to the top just like when I had CO2 fertilization running (currently turned off since some weeks). The ...
Kalle Richter's user avatar
3 votes
2 answers
3k views

Uncontrollable ammonia in an apple snail aquarium

I have three apple snails in a 10-gallon (37.8 liters) aquarium and the ammonia stays off the charts. I only keep seven to eight gallons (26 to 30 liters) of water in the aquarium so that the top ...
Silver Sagely's user avatar
2 votes
1 answer
91 views

Does dosing a tank for sicknesses cause harm if I can't diagnose the illness?

I came home after work today to my baby guppy tank showing signs of sickness. About 50% of them are gasping for air. I just did a 50% water change, after using my master kit, and seeing that my ...
Christy B.'s user avatar
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10 votes
6 answers
10k views

Can I add soda water to my tank to supply CO₂ for my plants?

I have some plants in my tropical aquarium. They're not doing too well. I suspect I may have a CO2 shortage. Can I add soda water to the tank? I've seen complicated setups for adding CO2 to water. ...
Richard C's user avatar
  • 1,374
6 votes
2 answers
3k views

Axolotl nitrate levels high- more frequent water changes?

I have had a young adult male axolotl (Smaug) for about a year now. Recently when testing water parameters I have found that the nitrate levels are very high (80ppm), but both nitrite and ammonia ...
Eloise Lockyer's user avatar
4 votes
1 answer
759 views

Film on surface of female betta tank

I recently took in one of my friend's male Bettas to treat it for ich (Ichthyophthirius infection). When I brought him back I noticed a film on the surface of her other Betta's tank (this one is a ...
Christy B.'s user avatar
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3 votes
2 answers
1k views

Could my gravel be causing my tank to be cloudy?

I have several freshwater aquariums of following volumes: one 5 gallon one 10 gallon two 20 gallon one 29 gallon one 55 gallon and an outdoor 300 gallon pond. Aside from the pond, I started with one ...
Christy B.'s user avatar
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