I Am Stumped

[Rlon35]

I have a 55 gallon tank. I have lost all of my baby guppies, a few adult guppies, and some giant danios. Many of the fish in my tank are swimming around erratically. I do 1-3 30 percent water changes per week. After my last chage (Saturday), I started losing fish. I dosed my normal ferts for plants, some advanced algae destroy, etc. I had recently lost a discus who had fungus and, primarily I believe, an internal parasite. The tank was medicated with organic meds, and all the other fish were fine well after that. My danios are down to 3, acting very agressively. My rams and rummy nose tetras look ultra healthy. PH 6.5, low nitrates, 0 nitrite, 0 chlorine, I don't know what gives, and I am not medicating the tank. The danios are making quick, crazy movements, often hiting things or eachother. They seem to be stressing out the other fish.

I have a 55 gallon tank. I have lost all of my baby guppies, a few adult guppies, and some giant danios. Many of the fish in my tank are swimming around erratically. I do 1-3 30 percent water changes per week. After my last chage (Saturday), I started losing fish. I dosed my normal ferts for plants, some advanced algae destroy, etc. I had recently lost a discus who had fungus and, primarily I believe, an internal parasite. The tank was medicated with organic meds, and all the other fish were fine well after that. My danios are down to 3, acting very agressively. My rams and rummy nose tetras look ultra healthy. PH 6.5, low nitrates, 0 nitrite, 0 chlorine, I don't know what gives, and I am not medicating the tank. The danios are making quick, crazy movements, often hiting things or eachother. They seem to be stressing out the other fish.

One other thing...the danios and some of the other fish don't seem to be eating. They move around like crazy when the foods in the tank....but they never seem to get it. Some gaping is seen in two of the danios.

 

[WILDER]

I would do an immediate water change.
Any chemical got into the tank.
has the fungus gone now and what meds did you use for internal parasites.

 

[Rlon35]

I would do an immediate water change.
Any chemical got into the tank.
has the fungus gone now and what meds did you use for internal parasites.

^^^^^^^^^^^^

I treated the tank for fungus. I see no signs of fungus now (used Pimafix?). I am using garlic and Kordon organic anti-parasitic/antifungal medication. I ran out of this, but dosed more than enough if it wa to work. Giant danios have taken to swimming upside down at times, under plants and driftwood, by the way. One dnio died, I euthynized another because it wa upside down. one of the three left split its fin when it got stuck in my feeding cone. He is swimming erratically. None of the three have eaten.....

 

[WILDER]

Are you sure the internal parasites have been erradicated.