Starting over.. - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 7 Old 01-06-2013, 04:33 PM Thread Starter
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Unhappy Starting over..

I have a 90litre fresh water fish tank, fully cycled it with a bit of food every other day for about a month, Once all sorted, I bought 4 tiger barbs, 3 chocolate gourami and a tiny plec, everything was okay, I did a 20% water change in the first week and then, half way through the second week, I woke up and most of the fish has died, they had all been eating well. I removed the dead fish, and did a water test, all the levels seemed okay, so I did another water change, this like of about 15%, and put my neon tetra in to this tank. They also died.

Well now I am in the middle of cycling this tank again after cleaning it with very dilute Milton, I've used some water safe stuff, and now the waters blue :/ ?, I just want to make sure all my fish will live when I buy them to go in there

Any advice on how to keep them alive, or what might have gone wrong the first time?
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post #2 of 7 Old 01-06-2013, 06:34 PM
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I would guess that you added too many fish too fast.
Once your tank is cycled you need to ramp up the bioload slowly so you don't overload the bacteria and cause a mini-cycle.

What's Milton?
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post #3 of 7 Old 01-06-2013, 07:24 PM
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Agree with Ogre that you added too many fish all at once. You need to start adding fish a few at a time - say two each week to let your bacteria catch up to the load that you're adding to the tank each time.

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #4 of 7 Old 01-07-2013, 12:58 AM Thread Starter
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Milton is a week form of sterilising fluid.

So jut buy my fish slower?
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post #5 of 7 Old 01-07-2013, 01:29 AM
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What exactly do you mean by your water's blue? Like the whole tank or a pH tester or something? And how blue is it if it's the whole tank? Opaque or clear with a tint?

Also, please go to the disease section and get the forum to fill out with all the details we need to make sure it wasn't something else okay?
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post #6 of 7 Old 01-07-2013, 01:37 AM
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Just did some googling on Milton. Did you rinse your tank like a crazy person before refilling it? That stuff is like bleach, good for cleaning tanks, but bad for fishies. It also said that you should have not cleaned any ceramic or porous decor with it as they suck it up.

Speaking of that, do you have and substrate or decor that might have leached blue dye into the water? Had a friend who had that happen, only with pink!
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post #7 of 7 Old 01-07-2013, 06:17 PM
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I second what others have posted. And when you are ready to buy fish, you need to select different from what you had. Chocolate gourami cannot be in a tank with barbs, any barbs. They have very different needs.

I will point you to our profiles, as I see you hare a new member. Second heading from the left in the blue bar across the top of the page takes you there, and if the name is used in a post identical to the profile it will shade, as it did for the gourami above; you can click on that for the profile. Please have a good read of the profile for any fish you are planning next time.

Also, when you do water tests, always keep track of the numbers and give us those. We may see something that you don't.

And welcome to Tropical Fish Keeping forum.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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cycling , death , new set up

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