Despite meticulously washing out twice after every load my sprayer lines seem to be providing a constant supply of pinky white flakes of sediment which obviously block the nozzles. I think it came from gammy trel. As I have never had this problem before in my entire career and this is the first year the agronomist prescribed it. Lumps of the sediment won’t dissolve in neat propionic acid. All clear softens a bit so I’ll fill the lines with all clear and leave it a few hours, take the end caps off and flush a tank full of water through. But I was wondering does anybody know of a decent pipe cleaner brush that would go on an electric drill or something up the lines and pipe work. 20 mm hose along the boom. Any other ideas? Never known anything like it.