EC is 1.3, pH is 6.6, but these middle leaves are looking darker than the last time I grew lettuce. Is it unhealthy? Also included a pic of the roots just in case.by nickreitz hydroponics 1 Comment nickreitz 2 months ago Correction: pH is 6.4Write A CommentYou must be logged in to post a comment.
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Correction: pH is 6.4