Sand stuck in container

[finley]

Hi everyone, so I’ve been using this container for water changes recently and have got some sand in one does anyone know how to get it out, I’ve tried pouring water in and then out again but it still stays stuck any suggestions please and thanks.

 

[2020 Worst Year]

just leave it

 

[finley]

just leave it

Ok, I didn’t know if it would affect the RO that was gonna go in it

 

[FUNGI]

TURN UPSIDE DOWN AND HOSE IT OUT......OR JUST LEAVE IT