What Kelp/Seaweed extract are you using in Canada?

[Orchid grower]

Hello everyone! I live in canada and am getting a bit overwhelmed with all the options, whatever is available in the US doesn't seem to be available in canada.

I can't find kelpmax/kelpak in canada without having to pay a high cost in shipping/duties.
I have a bottle of superthrive from 2020 but from my research I don't think it's usable anymore.

I'm looking something available in canada - I found something called sea-k but it's in a powder form and I read that powder isn't as effective?

Please tell me what the Canadian growers are using! Thank you

My main use of this is for reporting my neglected orchids. Whenever I used superthrive while reporting I noticed none of my orchids died. These orchids have been severely neglected and i want to make sure I won't lose them during repot.