Growing potatoes in growers bag

Hello all

I bought 6x40l bags online from crocos as well as some tubers.This is my first time growing this year I have a question about compost for the potatoes, I read any multipurpose compost is fine?

Now...I have some stuff in the shed someone left called canna professional soil mix not sure if this is any good however options for buying compost Locally are

New horizon organic
J Arthur multipurpose

The above are from a local shop and seem ok do you rate these? I have my own chickens so thinking putting in some chicken Manure could be good?

Any help would be great

 

Not heard of this, but if it has been in the shed for over a year I wouldn't use it. Mix it into your borders instead to improve the soil. Any MP should be fine so those other two you mention will do.

Only if it's broken down (composted), don't use fresh manure.