rip first pbass , what happened?

[BONDO]

Im running a 210 gal in the basement the ambient temp of the room is 67deg f. I have to run 2 300w in line heaters and just added 2 fluval 300w submersible heaters just to maintain a steady 80 degrees for my dats and kelbs. i just insulated the bottom of the tank and i am planning on insulating the back of the aquarium, along with insulating the sump with reflectix. i insulated my 125 in the same way, really helped i noticed a 80kwhr difference in my electric bill.

 

[Mayo]

i run 2x 300w Jagers in my 400gal and it runs constant 29C (84.2F) all day everyday and in my 150gal i run 1x 250W runs at 29C aswell never had dramas, fish could of simply died from stress and the colder temp?

 

[Johnnylightning]

x2

I've raised many small pbass at lower temperatures. They did just fine. I'm guessing something was wrong with the water parameters

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