Fish keep dying

[Lclark88]

So I'm pretty new to keeping fish and I've had my tank since August. I have an angelfish some swordtails and now some mollies. I've had about 6 swordtail die on me and two mollies in about 3 months and I don't know why. My water tests fine for ammonia and there's never any marks on then like they've been hurt. I've had the same angelfish since I September so I'm not sure if the other fish tend to just die but I need help.
Please and thanks.

 

[Fishie]

Did u check for ph level and nitrite?? Could
Not be eating too

 

[Sharkbait54]

Tank size?

 

[Lclark88]

I haven't checked my ph I will do that. I see them eat for the most part. My tank is 36 gallons.

 

[jlk]

Some more information will help us to help you out! Tank size, exact readings for ammonia/nitrite/nitrate/ph, what your using to test (liquid or strips), how often/how much are your pwcs (partial water changes), and what you are feeding (type food/how often) are some of the things we will need to know to help you.

 

[Lclark88]

So I'm not at home right now so I don't have all the information but my tank is 36g I change about 20% of the water once a week i use the liquid test and I feel them twice a day. I'll get the rest of the info when I get home.

 

[Lclark88]

Hey sorry this took me so long to get back but I tested my ammonia and my nitrite and they both have zero colour so it's 0. And I feed them nutrafin max tropical fish flakes. I didn't test for ph or nitrate because I don't have test kits for those but I will get some tomorrow and let you know what they are at. Thanks again.

 

[jlk]

Thanks! Let us know about the nitrates/ph when you find out!

 

[bruinsbro1997]

Are you testing with strips or a liquid test kit?

Do you wash/replace any filter cartridges/media? If so how do you do it?

 

[Lclark88]

I use the liquid tests and I don't wash my filter because I read somewhere it would recycle your tank.

 

[SammyH2O]

I think your Angelfish maybe the problem, love. Last I checked they are very aggressive fish; but I could be wrong. :/ My uncle has about 5 of them and they are seriously mean.

 

[Lclark88]

So I could only find a ph test and it's at 7.2. I won't be able to get the nitrate test kit until the end of the weekend.

 

[Ausfish]

Are you using water conditioner when you change the water?

 

[Dreamingdragon]

Did you used water condition to your tap water. I forgot it once I poisend my fish once

 

[Lclark88]

Yeah I do. I use nutrafin aqua plus

 

[librarygirl]

Testing nitrates would be a good idea; a 20% water change per week may not be enough. Also do you notice any symptoms before they die? My other thought would be swim bladder/bloat issues maybe? Feeding fish once per day should be more than enough and it might be good to fast them for one day a week as well. I can't really see anything else out of the ordinary that would be causing problems with the info given so far.

 

[Tigroscr]

I myself have never had any luck keeping swordtails successfully and I'm an experienced hobbyist! I finally gave up trying to keep them and I no longer purchase them or plan to do so anytime in the future they seem to be susceptible to some strange disease that I never could diagnose when everything else in my tanks thrive. I've never had Mollies so not sure about those!

 

[Lclark88]

I'll try feeding them less and changing the water more. And once I get a nitrate test all do that. Thanks everyone for all your help.