That's why someone like arapaimag needs to share experience with big tanks in cold climates
No one else can give decent advice about the costs...
I have no opinion about this "giant trout"...I find the notion of giant undiscovered fish much easier to believe than Loch Ness...My favorite example of cryptid fish BS is the "Lake Iliamna Monster" which seems to resemble a sturgeon in every way...except it's TWENTY FEET LONG (no wait, that sounds like a sturgeon too).
Not to mention they get White sturgeon in that area too lol.
I have no opinion about this "giant trout"...I find the notion of giant undiscovered fish much easier to believe than Loch Ness...My favorite example of cryptid fish BS is the "Lake Iliamna Monster" which seems to resemble a sturgeon in every way...except it's TWENTY FEET LONG (no wait, that sounds like a sturgeon too).