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Old 01-04-2016, 10:57 AM   #1
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Struggling with first tank

Hello!

I've have had my aquarium for over a year now, but I still seem manage to kill off a fish every few weeks. I know in the beginning I was too naive about everything, but now I don't know what i'm doing wrong. I had a good streak over the summer where all was well for about 3 months, but I've had two deaths (platys) in the last couple of weeks. One hadn't been eating and had been hiding for a while, but with no obvious external problems. The other had one white spot on it's tail yesterday and was dead this morning.

I do a 20% water change once a week and the parameters always seem ok. Ammonia nil, nitrite nil & nitrate 25mg. I feed my fish every other day.

My tank's only 30L which I have discovered in hindsight is somewhat small (small seemed good to an ignorant beginner). It contains 7 neon tetras, 1 ember tetra, 1 platy, 4 guppies and 3 snails.

I'm at the stage where I'm either going to stop buying replacement fish or consider gambling on a bigger tank, but I don't want to find that I'm still doing something wrong and it has nothing to do with tank size.

Does anyone have some good advice for me? Many thanks in advance!
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Old 01-04-2016, 11:08 AM   #2
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Can you tell us your entire maintenance routine? It's either that or maybe internal parasites maybe....
Also, has it been all different fish dying or just specific kinds?
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Old 01-04-2016, 11:49 AM   #3
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Many thanks for your prompt response!

I do a weekly 20% water change using a gravel syphon and replace the water with tap water (at same temperature) treated with prime. There are two sponges and two carbon filters. I rinse out one sponge in the old water one week and the other the next. I change one of the carbon filters one month and the other the next. I very occasionally clean the rest of the filter (in old water) if the flow seems to have reduced. I used to clean algae from the sides too, but since the addition of the snails a couple of months back, I haven't need to do this.

Since I've had the tank (roughly 14 months) I've lost 4 guppies, 4 embers, 3 mollies, 4 platys and one neon tetra. Of them all, my neon tetras have been the hardiest. I've had 4 of them since week two and they have even survived a bout of white spot. Not great statistics I'm afraid.
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Old 01-04-2016, 11:52 AM   #4
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Where have you been getting the livebearers (mollies, guppies, platies)?
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Old 01-04-2016, 12:23 PM   #5
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I've used three different stores in my region. The second two of which I chose because of their good reputations. I never used my local one as the fish and tanks didn't look well enough cared for.
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Old 01-04-2016, 12:51 PM   #6
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Hmm...I've had issues keeping livebearers from stores alive myself and suspect it's a genetic issue. Maybe try getting some really high quality fish from a breeder? If it's not that, it's probably internal parasites based on the not-eating part, so I would try Metro, Prazipro, or both.
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Old 01-04-2016, 01:01 PM   #7
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Thank you ever so much for your advice it's very much appreciated.
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Old 01-04-2016, 03:53 PM   #8
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If I read the post correctly you said 30L which would be almost 8 gallons. That is a large stock of fish for such a small tank. I think maybe 50% pwc every 3-4 days.

Any fish have whitish stringy poop?
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Old 01-04-2016, 06:25 PM   #9
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I agree with Autumnsky on this

Quote:
I've have had my aquarium for over a year now, but I still seem manage to kill off a fish every few weeks. I know in the beginning I was too naive about everything, but now I don't know what i'm doing wrong. I had a good streak over the summer where all was well for about 3 months, but I've had two deaths (platys) in the last couple of weeks. One hadn't been eating and had been hiding for a while, but with no obvious external problems. The other had one white spot on it's tail yesterday and was dead this morning.

I do a 20% water change once a week and the parameters always seem ok. Ammonia nil, nitrite nil & nitrate 25mg. I feed my fish every other day.

My tank's only 30L which I have discovered in hindsight is somewhat small (small seemed good to an ignorant beginner). It contains 7 neon tetras, 1 ember tetra, 1 platy, 4 guppies and 3 snails.
your biggest problem is the part I highlighted which you already acknowledged a 8g tank is to small for that stock , for the time being till you can upgrade tanks follow autumnskys suggestion , look forward to hear of a happy outcome
Try and avoid any new stock till you can upgrade your tank
almost forgot welcome to AA remember a happy fish is a healthy fish
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Old 01-04-2016, 06:45 PM   #10
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I agree, but the water quality seems to be in check so overstocking doesn't seem to be the issue.
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