let me start off by telling you tank set up and stock.
i have a tall 56 gallon tank with a Aqueon 75 filter and Aqueon Pro 100gal heater.
tank temp 78-80 Degrees
1 weekly water change 75%
Kordon Fish Protector
Seachem Flourish
Prime
10 Panda Cories
2 4in Golden Severums
1 Dragon Goby Eel
1 Red Tail Shark
1 Jellybean Parrot Fish?
1 7-8in Sailfin Pleco
This Morning I woke up and turned my fish tank light on and noticed a dead panda cory

Ammonia 0ppm
Nitrite 0ppm
Nitrate 8ppm
i dont see any indicators of why they should have fin rot at all! I also wanted to let you guys know that in the passed 10mins of watching the cories i noticed 3 of the slapping their bodies against the substrate and plants i havnt seen them do this before! My redtail shark does it when i feed him but its occasional.Im just curious to know if that has anything to do with anything? What do you guys this is going on and what can i do to save my cories!!??
Thanks,
I didn't find the right solution from the internet.
References: http://www.tropicalfishkeeping.com/trop ... lp-697058/
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