Alastrum Water Bucket

this wood Bucket have small glyphs writen on them its possible to notice them whit a sucessfull DC 20 investigation or arcana skill check
this bucket have the following properties.

The bucket looks empty but if turned it pours 50 ounces of ocean water for turn. it can be stoped by turning it up again.
Sometimes fishes and water plants and other creatures also pours throw the bucket, it is probably conected to the plane of water.

Notes: Control, Combat, Deception