Powdery mildew?

Looks like this guy has got powdery mildew, can anyone confirm?

Only watered when completely dry and in a perlite heavy succulent mix and 12 h/day grow light . Probably going to let this one go, but want to make sure I know what I’m dealing with in case of spreading to other plants. Thanks!

Looks like this guy has got powdery mildew, can anyone confirm?

Only watered when completely dry and in a perlite heavy succulent mix and 12 h/day grow light . Probably going to let this one go, but want to make sure I know what I’m dealing with in case of spreading to other plants. Thanks!