See less of these, support the forums and become a Super Subscriber today!

We also have sponsorship opportunities for tropical fish related businesses from just 20 per month.

New Tank Owner - Fish Dying

Author Topic: New Tank Owner - Fish Dying  (Read 1317 times)

0 Members and 1 Guest are viewing this topic.

Offline Fuzzydonna

  • Fishy Contributor
  • *
  • Posts: 6
  • Likes: 0
  • Tropical Fish Forum User
New Tank Owner - Fish Dying
« on: November 16, 2016, 07:12:39 PM »
  • Likes On This Users Post 0
Hello we have had our fish tank now about 2 months a Marina 360 Aquarium 10L with heater. About 6 weeks ago after the cycles and letting the tank acclimatise we purchase 4 molly fish (1 male/3 female). This week we have lost two of the lady molly fish both of them head in the gravel tail up in the air. They were both very happy fish and showed no sign of illness.

I have done the PH test and the nitrogen levels are extremely high, as discussed with pet shop i should clean tank now 20% every other day and only feed every other day and test in a weeks time.I am putting tap safe in when changing the water and also a conditioner which helps lower nitrates.

Anyone else have any tips of advice on how to get the levels lower

Offline Sue

  • Global Moderator
  • Hero Think Fishy Member
  • *****
  • Posts: 7891
  • Likes: 169
Re: New Tank Owner - Fish Dying
« Reply #1 on: November 16, 2016, 07:37:24 PM »
  • Likes On This Users Post 0
Hi Fuzzydonna  :wave:

I'm afraid I have some bad news for you.
10 litres is a very small tank and, despite what the manufacturers say, it is not suitable for any fish. Mollies in particular are big fish - females can grow to 6 inches long.

But for now you need to keep the remaining fish alive until you decide what to do.
When you say the nitrogen level is high, do you mean nitrate? And what are the levels of ammonia and nitrite?

The way to get any of the three down is by water changes, and I would do more than 20% every other day - I would do at least 50% every day. And if you have readings of ammonia and/or nitrite over 0.25 ppm, you need to do enough water changes to get them below that figure and keep them there. Maybe even multiple daily water changes. As long as the new water is dechlorinated and warmed to approximately the same temperature as the tank, the fish shouldn't suffer.
And I'm afraid to say that I do not know of anything you can add to the tank that will lower nitrate except perhaps a lot of live plants.




In the longer term, I would give serious thought to the tank. You really have just two choices. Either get a bigger tank - and for mollies this needs to be at least 30 inches (75 cm) long - or rehome the fish and get shrimps. 10 litres is too small for even a single betta (siamese fighting fish)


I'm sorry to be the bearer of bad news.

One last point - don't believe anything a shop tells you until you have researched it for yourself. Some (particularly large chain pets stores that sell fish) don't train their staff in anything but selling techniques. Others will say anything to make a sale. The health of the fish is low in their priorities.

Offline Littlefish

  • Global Moderator Subscriber
  • Hero Think Fishy Member
  • *****
  • Posts: 2565
  • Likes: 153
  • aka Donna
Re: New Tank Owner - Fish Dying
« Reply #2 on: November 16, 2016, 09:36:40 PM »
  • Likes On This Users Post 0
Hello Fuzzydonna and welcome to the forum.  :wave:
So sorry to hear about the situation that you are in.
The first tank I bought was from Pets at Home and was around 25L, but the fish they advised I purchase after cycling were not suitable for a tank that size, and I only found that out after looking through this site & forum.
Best of luck with deciding what to do with your remaining fish and please keep us posted.

Offline Fuzzydonna

  • Fishy Contributor
  • *
  • Posts: 6
  • Likes: 0
  • Tropical Fish Forum User
Re: New Tank Owner - Fish Dying
« Reply #3 on: November 17, 2016, 09:25:57 AM »
  • Likes On This Users Post 0
Thanks for all the information i wish i read these forums before listening to the pet shop.
Yes the nitrate level is over 3.3mg
I am going to do another change today shall i do a test afterwards?

Offline Sue

  • Global Moderator
  • Hero Think Fishy Member
  • *****
  • Posts: 7891
  • Likes: 169
Re: New Tank Owner - Fish Dying
« Reply #4 on: November 17, 2016, 10:10:50 AM »
  • Likes On This Users Post 0
Are you sure it's nitrate that is 3.3 not nitrite?  3.3 ppm nitrate is very low, lower than most people have in their tap water. Nitrate and nitrite are so close in spelling that it is easy to confuse them.

If it is nitrite, that is way too high. To get it down below 0.25 you will need to empty all the water, which isn't really an option with fish in the tank. So take as much water as possible out leaving just enough for the fish to be able to swim upright. After putting the new water in, wait half an hour to allow the water to mix and test again. If it is still above 0.25, do another water change and test again. Keep doing this till the nitrite level is below 0.25.

You'll need to do this every day until both ammonia and nitrite stay at zero by themselves.

You are doing a fish-in cycle. This explains what is happening in your tank and goes into more detail about what to do.

Offline Fuzzydonna

  • Fishy Contributor
  • *
  • Posts: 6
  • Likes: 0
  • Tropical Fish Forum User
Re: New Tank Owner - Fish Dying
« Reply #5 on: November 17, 2016, 10:34:59 PM »
  • Likes On This Users Post 0
It is Nitrite i apologise going to change the water now and see what happens when i test

Offline Sue

  • Global Moderator
  • Hero Think Fishy Member
  • *****
  • Posts: 7891
  • Likes: 169
Re: New Tank Owner - Fish Dying
« Reply #6 on: November 18, 2016, 09:22:18 AM »
  • Likes On This Users Post 0
The two words are so similar that they are easy to mix up.

You need to get the level of nitrite down as quickly as you can and keep it down. Both ammonia and nitrite are killers.


You haven't mentioned an ammonia reading. Do you have a tester for that? Ammonia is a killer as well, and that too needs to be kept below 0.25.

Offline Sue

  • Global Moderator
  • Hero Think Fishy Member
  • *****
  • Posts: 7891
  • Likes: 169
Re: New Tank Owner - Fish Dying
« Reply #7 on: November 18, 2016, 09:46:12 AM »
  • Likes On This Users Post 0
@Fuzzydonna it has just occurred to me to ask about the tank's filter. What is inside the the filter, that is what is the media like? Sponge, cartridge?  Or does it even have media or does it use the gravel on the bottom as the medium?

Offline Fuzzydonna

  • Fishy Contributor
  • *
  • Posts: 6
  • Likes: 0
  • Tropical Fish Forum User
Re: New Tank Owner - Fish Dying
« Reply #8 on: November 18, 2016, 10:21:31 AM »
  • Likes On This Users Post 0
Hi Sue, the filter takes to cartridges which i have changed once already.
Changed a large amount of water this morning as it was still reading for nitrite just waiting a bit before i test it again.
Thanks

Offline Littlefish

  • Global Moderator Subscriber
  • Hero Think Fishy Member
  • *****
  • Posts: 2565
  • Likes: 153
  • aka Donna
Re: New Tank Owner - Fish Dying
« Reply #9 on: November 18, 2016, 10:31:36 AM »
  • Likes On This Users Post 0
What make & model of filter do you have?

One on the most awesome things I learned very quickly when I started to use this forum was not to change cartridges when the manufacturer suggests. I have some superfish internal filters in some of my tanks, and these have cartridges which click into the filter housing. The manufacturer suggestes to change the cartridges monthly. If you do this you are removing all the beneficial bacterial that you have grown in your filter and replacing it with a brand new (uncycled) filter cartridge.

My cartridges mainly have sponge, which I take out and gently rinse in a bucket of tank water during the weekly maintenance. I then put the sponge back into the cartridge and click it back into place. This keeps all of your beneficial bacteria. I have some filetr media that I have had for around 12 months, and it is still working well, and giving very good water parameters (0 ammoni and 0 nitrite).  :)

As a beneficial side effect this also saves a fortune in new cartridge costs, as well as ensuring that you keep your bacteria.


Offline Fuzzydonna

  • Fishy Contributor
  • *
  • Posts: 6
  • Likes: 0
  • Tropical Fish Forum User
Re: New Tank Owner - Fish Dying
« Reply #10 on: November 18, 2016, 11:33:16 AM »
  • Likes On This Users Post 0
I have changed almost all the water today and it is still 3.3  :-[

I am using Marina 360 Carbon/ Zeolite Cartridges

Offline Sue

  • Global Moderator
  • Hero Think Fishy Member
  • *****
  • Posts: 7891
  • Likes: 169
Re: New Tank Owner - Fish Dying
« Reply #11 on: November 18, 2016, 12:05:06 PM »
  • Likes On This Users Post 0
Those cartridges are terrible. Sorry  :-[

Zeolite absorbs ammonia and then it gets full and stops working. While they are working, ammonia stays nice and low but because the zeolite is removing the ammonia no bacteria grow. Then the zeolite gets full, ammonia is not removed but there are no bacteria to eat it so the level in the water shoots up. This is why they want to you to change the cartridges every month, to replace the zeolite before it gets full. But in your case you have rather a heavy fish load so the zeolite will get full quickly. You must have, or at least had, ammonia in your water because you have nitrite, and nitrite is made from ammonia.

The best thing you can do is to take out a cartridge, make a slit in the outer casing and remove the contents. Then put some sponge inside the casing. You can buy filter sponges quite cheaply, just cut it into slivers to make them fit. If there is more than one cartridge, do one now then the next in a couple of weeks till they are all done. This way you do keep the bacteria in the outer casing.



What is the highest level with the nitrite tester you are using? Is it 3.3?
When the level gets to higher than the highest colour of the tester it will still show as that colour. So if your tester goes up to 3.3 and you had 10 ppm it would still read as 3.3.
You need to do another water change, as large as possible leaving the fish covered with water. Test again after half an hour and if it still above 0.25 do another water change. And another water change if the reading is still over 0.25. You need to do as many water changes as it takes to get that level down.
And maybe the same tomorrow, and the day after and the day after depending on how fast nitrite goes up.

Offline Fuzzydonna

  • Fishy Contributor
  • *
  • Posts: 6
  • Likes: 0
  • Tropical Fish Forum User
Re: New Tank Owner - Fish Dying
« Reply #12 on: November 18, 2016, 12:12:58 PM »
  • Likes On This Users Post 0
Thanks Sue i will keep you posted on how it goes over the weekend
Thanks Donna

Offline Sue

  • Global Moderator
  • Hero Think Fishy Member
  • *****
  • Posts: 7891
  • Likes: 169
Re: New Tank Owner - Fish Dying
« Reply #13 on: November 18, 2016, 12:18:40 PM »
  • Likes On This Users Post 0
I should have added that if you do fill the cartridges with sponge, just squeeze them in water that you take out of the tank during a water change to clean them. There will not be any need to replace them.

See less of these, become a Super Subscriber today! We also have sponsorship opportunities for tropical fish related businesses from just 20 per month.

See less of these, become a Super Subscriber today (see below)

** Become a ThinkFish Super Subscriber **

It takes time and money to keep ThinkFish going, if you'd like to help, then a Subscription of your choice would be fantastic. Your subscription will help fund new articles, help pay for server costs and help fund development and promotion initiatives, helping us bring you more of the good stuff you love! You'll also see less ads. Why not become a Super Subscriber today!?

We also have sponsorship opportunities for tropical fish related businesses from just 20 per month.

Tags:
 

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 

Think Fish © 2004-2018 | Keeping Tropical Fish Forum - Everything you need for your Tropical Fish hobby

Tropical Fish Help and Advice
Tropical Fish Keeping Community
General Non-Fishkeeping Chat
Legal | Contact
SEO Services in Kent
Follow Think Fish on: