white substance showing up throughout my hydro system

So this build up is on the outside of my hoses in the water, and a ring around the buckets at water level and lower, I also just noticed its on the inside of my drip lines which is one picture below, the other picture is my res and you can see the ring around the bucket at water level and the build up on the water pump power cord, id be glad to answer and give any more info that would help out in figuring what this could be. thanks.

Bump , any one any ideas ?

Its salt from the nutes. When you change the res every 2 weeks you have to scrap/scrub the crust out of the res as well.