White residue ???

Hey, buddy! 👋 After each harvest, these salts "pop up" on the sides of the breathable pots. After every harvest, I wash my pots in the washing machine (2.5-3 hours) at temperatures of 90 degrees Celsius, using liquid household soap as the detergent (it's safer than any powder or cleaning agent)!!! After washing and double rinsing, I let these pots dry. Once they're dry, I take a brush and clean the rim of the pot from these salts. They don't always come off completely, but most of it gets cleaned! These salts don't cause any problems as long as there's only a minimal amount on the sides of the pot! I've tried this myself and continue to use pots that I've already used 6 times, even though salts have always appeared since the first grow! 👌 Good luck, buddy! ✊😇