Please help - tank disaster!

casemarten

AC Members
Apr 4, 2009
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Memphis, TN
Hello! I am new to the forum here. Seems like a lovely place!

I have had fish off and on my entire life. We recently got a new tank for our daughter's 4th birthday and it has been a total disaster. I need some serious help, as I don't have any clue what to do other than what I have already tried.

The tank is 20 gallons, was set up for 1 week before any fish or snails were introduced.

The first stocking was: 5 fancy male guppies (I used to breed them!), 1 black molly, one silver molly, and one gold snail.

After the first stocking 1 guppy died the next day and the rest were fine for 3.5 weeks.

We then bought 1 more black molly and 1 more silver molly. Also one pineapple swordtail. I strongly believe that one of these mollies was 'diseased' as everything went downhill from here.

The day after the second stocking, two guppies died. One other guppy developed 'fuzz' on a side fin and one of the black mollies had white on its mouth.

I assumed this was a fungal issue and talked to the fish person at the store, they also thought it was a fungal issue. So I started treating with Pimafix, removed the carbon, etc.

Next day, a dead silver molly. The other silver molly also had developped white spots on its tail, top fin, and its eyes looked weird. Not pop-eye, but like there was a film on its eyes.

I continued treating with Pimafix, kept the water at a constant 78.

The silver molly with the spots started to look better. The guppy that had the fuzz fin also looked better, the fuzz was gone but the fin looked damaged. For 2 or 3 days they seemed to be improving.

THEN...pretty much everything died. I have no idea why. Conditions are all the same, I've tested my water and everything comes up within normal range. We now have only 2 guppies, the pineapple swordtail, and the snails.

The remaining guppies and swordtail NEVER showed any signs of disease or lethargy. However, my snails have gotten a bit sluggish over the last 24h. They are good, more active than average snails, so this worries me.

I did a partial water change today (about 25%) and am wondering what I should do next. I feel like the problem may not have been fungal (?) and am wondering why 3 of the fish have been entirely unaffected. All the other ones, at some point or another, even if they didn't look terrible, showed signs of weakness. The remaining ones are A-ok as far as I can tell.

The tank looks SO empty (was not fully stocked to begin with!) and my daughter wants new fish. Of course, I don't want to put them into a 'sick' environment - so I need some help as to what to do. I also would like some suggestions about what kind of fish to keep. In college I bred guppies for extra money but they are not particuarly hardy. I need hardy fish because my 4 year old doesn't quite understand them dying all the time and having to get new ones. I kind of want to stay away from mollies now! but I did think they were pretty easy fish to keep. Other than breeding guppies, I have always had 'mixed' tanks with one or two fish of each type. I know this is kind of 'un-kosher' but it worked for me.

The one fish I really love and want to have is a dwarf gourami.

BTW - I do have 4 live plants (don't know what they are called). They seem to be doing fine.

So...what do I do? Since the remaining fish have been fine and through a week's treatment of Pimafix, can I go ahead and get new fish? Or do you think this was not fungal and needs additional treatment?

Can anyone suggest what types of fish (I like to have multiple types) that are hardy and can cohabitate with the swordtail, snails, and hopefully a dwarf gourami? I think I am going to move the guppies to an old desktop I have because they don't do well with most other fish.

Any help would be much appreciated, Thanks in advance!

Cayce
 
By the way, if anyone has any cool snails for sale, please PM me or post here. I'm also looking for more plants, especially tall ones and anacharis for the snails. Tank allowing, ofc! :)
 
It appears to me that your tank is not cycled. You can find out about cycling here http://www.aquariacentral.com/forums/showthread.php?t=84598 Because you already have fish in the tank, you need to check the "fishy" cycling. What exactly were your water parameters when you tested and with what test kit. The test strips can be extremely inaccurate and most of us us the API Fresh water Master Test Kit. I would not add any livestock to your tank until the tank has completely cycled. As far as the fish and snails already, do as many water changes as it takes to keep your ammonia and nitrites below .25 and the closer to 0 the better.

By the way Welcome to AC.
 
agree with snoop/sydney(:p: ) your tank isnt cycled yet. a process called the nitrogen cycle happens in your tank. its caused by the fishes wastes and uneaten food. this rots and creates ammonia which burns fishes gills, after the bacteria develop (which takes a few weeks) and eat ammonia, they transform it to nitrite which prevents fish taking oxygen into there bloodstreams. after a few weeks later the bacteria turns the nitrite into nitrate which isnt very harmful, but toxic in high amounts. your cycle is done and it is safe to add fish. you need an ammonia source for this happen though letting it sit for a week will do nothing. get a good liquid test kit like API's. because your fishy cycling you need to do DAILY 50% water changes to keep your fish happy. good luck!
 
The fuzz sounds more like columnaris than fungus. Search for it online and you'll get lots of info.
 
You shouldn't get any more fish for now for 2 reasons:
1. Your tank is not cycled. You will keep killing fish. Read up on fish-in cycling and get yourself a test kit.
2. You have either fungus or columnaris in there & you need to get rid of it. I would treat with both an anti-bacterial and anti-fungal.

I would not put another fish in there until everything has been happy and healthy for at least 6 weeks, especially since you have had so many deaths already. 25% changes are not enough right now. Get a test kit and do at least 50% water change any time your ammonia/nitrite levels reach .25ppm.

Good luck & keep us posted.
 
Thank you all for your replies!

So I guess I should re-check my water? The test I did previously (this was at onset of problems) was the Quick Dip Multi-Test. Everything came up normal or close-to then. But it has been a week.

So do you recommend treating my tank with an anti-bacterial now since I've already done an anti-fungal (Pimafix)? If so, then I can't do daily water changes for it to work?

Also, I mentioned my snails are sluggish, I did not mention they are pretty much staying on the glass at the top, if that is of any significance.

Will adding more plants help the tank cycle faster?

Retesting the water tonight, will let you all know. Thanks so much for your help!
 
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Test strips are notorious for being inaccurate, a good liquid test is the way to go. API has a good one. Snails are sensitive to ammonia and their behavior may be related. Also make sure the medication you are using is invertebrate safe. Plants can help absorb ammonia so it would not hurt to add more plants.
 
:welcome: to the forums!


How many fish do you have left? (You may want to start over from scratch) Also try sourcing fish from another source (Some, if not most, LFS have all their tanks on the same water system so disease my spread from tank to tank) Also, consider setting up a quarantine tank (a 10 gallon with a cheap heater and foam filter will do) You can either pre treat (keep this water medicated) or observe fish for signs of sickness. (this tank can also serve as a hospital tank for your current fish as you clean/reset up/cycle your current tank) JMO Good Luck!
 
I have 3, 2 guppies and the pineapple swordtail. They seem to be fine. I thought about moving them all to the desktop I have in storage and starting over. But I dunno how much my daughter would like that!

Ok, going to talk hubby into going to pet store tonight then. Will get liquid test and more plants!
 
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