There are many things it could be. It could be: Salt creep, sand, rock scrapings, dust from new uncleansed filters, or It could be living or it could be micro bubbles.
Salt is soluble in water.
Generally the appearance is that of a dusty substance, the colour changes depending on the acidity of the solution when it was in its liquid form and if an indicator was used, usually it is white and dusty. :)
Salt water will erode earth material much more quicker.
The answer is water Salt water Water melon White water
Water. Salt Water, Watermelon, White water
salt
The word is water. It creates the words salt water, watermelon and white water.
alum....it is a white double salt used for sedimentation of muddy water....
Rock Salt
Something that can be dissolved in another material is a solute, and is said to be soluble in that material.
water
SALT