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New Tank Setup - Fish Dying

Subject: New Tank Setup - Fish Dying
by Saj on 13/11/2013 9:47:30

Hi,

New member and need some help please.

I bought this tank on Friday 8th November:

http://www.petsathome.com/shop/starte ... 24l-by-pets-at-home-92217

This was just something to get me going and get some experience before getting a larger tank.

I left this running without any fish or anything, with the filter in it until Sunday afternoon (following the rubbish advice from Pets at Home about ?3 day cycle?!) and bought 3 Danio?s and 3 Rosy Barb?s.

Overnight on Sunday 10th, one of the Rosy Barb?s died, it was fine when I checked them and I found it dead on Tuesday morning.

I went to Pets at Home, bought the API Master Kit and this new filter:

http://www.petsathome.com/shop/smallw ... er-kit-by-penn-plax-16312

As I believe the provided filter with the tank wasn?t up for the job. I have currently both filters running to allow the new filter to establish before removing the old one.

I tested the water on Monday evening 11th and the pH 7.2, Amonia zero, Nitrite 0, and Nitrate 20ppm. Which from what I understand is acceptable limits.

On Tuesday, I bought 3 more Danio?s and 2 Paradise fish followed the process in getting them into the tank.

On Tuesday 12th, I checked the water levels again, pH 7.2, Amonia zero, Nitrite 0, and Nitrate, between 20ppm to 30ppm.
Now overnight, another Rosy Barb has died.

It was only last night I started to do more research and made the classic newbie mistake of not cycling the tank long enough and just following Pets at Home?s advice of a 3 day cycle which his clearly not enough. I did originally feed the fish too much, but I cleared out the excess using the syphon and net.

I do not want any more of my fish to die and not sure what to do next, the water tests are showing ok however the water is giving a small bit of odour. I have two snails for Algae control

I was planning to do a 20% water change today, do more syphoning of the gravel to clear any much up.

Can anyone give any other advice?
Thanks in advance!