old420biker
420 Member
Hello, I'm a first time grower and I need advice. I'm using a smart pot and I have a white residue on the outside of the pot. My question is, is the residue salt or mildew? I'm using a 2'×2'×4' grow tent it has plenty of ventilation and I have a fan inside with plenty of air circulation. My plant is starting her second week of flowering. I do not smell any mildew. My plant looks good, but there is a little potassium deficiency that I have countered with nutrients. My main concern is the residue on the pot. Help.