Anyone have cold water tanks?

[BlueAbyss]

Just curious if anyone in Canada has done (or currently has) a cold water tank? The more I look into it the more I am attracted to it...

I actually will be doing an AIO planted tank this summer. Planted with native species of plants, which are technically coldwater, even if it's fresh... I may get a 30 gallon tank and try to get a collection permit for some Yellow Perch, which here are more like 'orange and green' perch. Or just get a fishing license and a bucket

I'd really like to see a tank shot if anyone on here has or has had a marine cold water tank, and their experience with it, Thanks