Soap drawer exit hose blockage (Candy CNA145)?

I have a blockage in the drawer which I discovered after water leaking from the drawer at the start of a wash. When I removed the drawer from the machine, water was still sitting in a pool inside. It's the hose in the bottom of the drawer compartment leading down into the machine.

I have given it a good poke inside with a toothbrush and bottle brush, yet there's no budging the water. There does seem to be bubbling when I pour hot water in to replace the water I syphon out though. I think it's undissolved powder blocked solid in there.

Is there a better way of unblocking the hose? It's gonna be painstaking to try and dissolve it all without a route through.

Thanks in advance.