I'm way behind but I didn't want you to go unanswered by anyone.
I've never seen a micronute deficiency in any plant using synthetic nutes.
Plant all the lavender you want! Your weed will smell like weed.
There's no harm in flushing as long as the last water you run through the plant is full strength nutes. Don't leave 'em hungry.
More fans on low is a good idea, especially if they don't oscillate or are close to the leaves even if they do.
I've never seen a micronute deficiency in any plant using synthetic nutes.
Plant all the lavender you want! Your weed will smell like weed.
There's no harm in flushing as long as the last water you run through the plant is full strength nutes. Don't leave 'em hungry.
More fans on low is a good idea, especially if they don't oscillate or are close to the leaves even if they do.