De-icer recommendations

[maria.ny]

I have a 5x8ft pond 3ft deep in Buffalo NY. I've been using a 300w Aquascape floating de-icer which keeps a good-sized hole in the ice, except it often trips the gfci. Seems to happen when it's windy. I thought maybe the housing seal was going bad & water was getting in & shorting it out, so I replaced it with the same brand last year and had the same problem. It works fine after resetting the gfci, but will trip it again next really windy day. It hasn't killed any fish (yet) but I don't trust it and want to try a different brand. Any recommendations?

FYI I remove the pump in the winter & use a airstone type bubbler and the de-icer to keep the fish alive

 

[Tula]

In our final years of keeping koi, we covered our pond and only used an air diffuser.

 

[j.w]

@maria.ny

 

[GBBUDD]

i do not use any cover and have a strong air pump just pushing air to a shallow shelf in the pond leaving the depth undisturbed .
my air pump is also in my bulked so it is semi protected from super chilled air

 

[jgrandmont]

I don't know the specific brand, but I think I got my de-icer at Tractor Supply.