I think I have fin rot

[huxta]

I think one of my sword tails has fin rot. At first I thought it was just a nip in his tail, but it's edges are white and noticed it on her side fin as well. A couple fish have slight ich as well.
I got some medication for fin rot, popeye, fungus and ich. It is called Mardel Maracyn. Has anyone ever had any experience with this and do you think it could be harmfull to new fry?

 

[st.cichlid]

yeah it works GREAT

 

[kevin007]

wow..ur tank has...alot of disease...u test water?

 

[noop]

yeah it works GREAT

have you actually used this stuff st.cichlid? with fry?

huxta do you have a hospital tank? it would be best to put your sick fish in there for treatment, and keep an eye on the remaining fish in the main tank. test your water for ammonia and nitrite levels, and if water quality is bad, do maybe 10-20% water changes daily until it's ok

noop

 

[huxta]

I test my water weekly.
ph 7.0-7.2
ammonia and nitrites non-detectable
nitrate 20

I had just purchased the swordtail 5 days ago and that was the first one I noticed had ich and the only one with fin rot.