i have a 20 litre cold water fish tank and have unsucessfully put firstly three gold fish in it which died within a few days ,after cleaning out tank i found out about tap water containing chlorine which kills fish,i then added dechlorinator waited a few days and then put one goldfish in tank ,this one seemed ok for about ten days then died,after some research online found out about ammonia ,so after cleaning out tank again i added dechloinator again and added a water treatment to combat ammonia problems,but from more research have found out tank maybe too small for goldfish
so as u can expect i am getting a bit fustrated now
so my question is have i done it right this time and what fish will be best for my 20ltr tank and how many
please please help this is driving me totally mental
Hi - indeed as you realised and learnt goldfish are not suitable for 20litres tank. One goldfish require 20 gallon tank so 4 times bigger volume plus even in this big volume they need powerful filtration.
Now for your new attempt at 20 litres you have first of all I would suggest reading and researching on nitrogen cycle and ammonia poisoning. Here are the links:
These are two important issues and understanding them would make your tank a healthy habitat for aquatic animals.
Please read also this http://www.myaquariumclub.com/10-facts-to-remember-in-aquarium-hobby-1466.html, plus when you click on Top Articles you will find many other helpful texts there.
I would suggest for you a male betta fish - 5g (20 litres) tank is a good size for a betta, and a betta is such a little cutie with long fins and flaring behaviour. Here is the betta fish profile so you can get more info and tips - http://www.myaquariumclub.com/fish-profiles-betta-splendens-1543.html
Is your 20 litres equipped in filter and heater? You need this for your Betta fish. First though before bringing home fish you need to cycle your tank, it will take about 3 weeks (see fishless cycling in Top Articles section) in order to establish beneficial bacteria, and these bacteria will allow to deal with ammonia and other toxins. Biological filtration is the only way to have peace of mind, no chemicals can substitute for it, this is how nature solved this problem in water pools. Any questions or something is not clear - just ask, we are happy to help.
I am suggesting Betta because in my opinion it is a good choice, 20 litres tank is considered small and choices are limited, however there are few other options, that I am sure others will also advise you on. One obvious is to have it set up as a shrimp only tank with lots of live plants and a nice pice of driftwood. You can also keep few rasboras (rasbora borara).
cool thanks for info,but not got heater in tank so anymore ideas on fish
White cloud mountain minnows are small and can tolerate cooler water. They are also peaceful and attractive.
Plant the back and sides of the aquarium, and leave plenty of swimming space in the middle section of the aquarium.
thanks will try them
after consideration,i have brought a heater and am going for the betta option but think my pump may be to powerful for them so have reduced flow rate by adding sponge to intake pipe ball and put some gravel in bottom of housing and seems to have reduce flow quite a lot,will this be ok and have also added artificial plants to tank so fish have got hiding places
any advice would be good as i am on a limited budget
Let's hope this reduced flow would be okay for your new Betta. You can also point the flow toward the wall and it will further reduce the impact. Also plants placed near the filter can further reduce it. Plastic plants are okay, but please check if they do not have any sharp edges or spikes etc, as a betta male has a long flowing fins. You can also consider adding some live plants like Marimo ball or java fern, they are easy to care and cheap. Bettas like a slightly acidic pH so a small driftwood would be a good option - again driftwood is not expensive, some more fancy wood can be, but a small (as they are called 'nano' piece suitable for a 20litre tank would be cheap). Please get him Betta pellets (e.g. Hikari) and use them as staple food - presoaked so wet and soft. Diet variety is important so you can use frozen (defrosted before feeding) bloodworms or mosquito larvae, but pellets a main source of protein.
Remember to cycle you tank first. Do you have test kit to measure ammonia, nitrite and nitrate levels? API does a good one, but other brands are also good, however liquid tests are better and more reliable than strip ones. You can also consider a filter booster like API Stress zyme or Waterlife Bacterlife to kick-start nitrogen cycle. Good luck with cycling and your new betta!
A 20 litre tank is only suitable for 1 fish unless you have 2 tiny fish,but they will need to have plenty of room to swim and grow.Even goldfish grow big as you know they can live in a pond.
hi id go with minnows their adorbs..
Just a heads up.
This post is 9 months old.
yes thankyou.I saw this sight ,and thought how interesting it was,so i sat and tried to give advice and help people,not knowing the comments were written along time ago,never mind quite a few people have let me know.Thanks tho.
It is right internal filter wall hanging i purchase .. im having 54Liters(14 gallon)aquarium .now Im having 2 red cap 2″ gold fish ..last week 2 of my 2″fantail gold fish got dead . I do weekly twice water change 40 to 50 percent .Im really concerned about the filter is too big for my 14 gallon aquarium and what is F.Max 880L/H . If it’s too big for my tank then which one will be good for me .
Aquarium internal filter
Ac 220v-240v 50 hz 15w
F.MAX 880 L/H
Hi I have just got a 20L tank and will look at the minnow could I only fit one in this size tank? thank you
First of all, this is an old post, and second of all, you would be better off getting a betta and some shrimp with some live plants.