Lesser Siren killing my fish?

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CatmanJuice

Feeder Fish
MFK Member
Apr 7, 2010
15
0
0
St. Louis
I recently (approx 3 weeks ago) got a lesser siren and added it to my fish system. Now, within the past two weeks I've lost a redtailed cat, a TSN x RTC, a polypterus, and a few regular plecos. At first, I thought it was some terrrible bad luck or something else, today I noticed many of my cichlids (flowerhorns, green sevrums) have ich. Anybody heard of lesser sirens causing problems with fish? thanks.

oh yeah,
ph - 6.8
Nh3 - 0.0ppm
No3 - 0.0ppm
I do approx a 50% water change weekly, and have done so for years. The RTC and the RTC hybrid were both about 24in and I had them for approx 1 yr. The poly was about 18in and got it the same time.
 
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