only a guess, but perhaps the molasses was 'suffocating' the roots ?? ... IF too strong a mixture, I could see how it could adhere to the roots, and not allow the airstones to get enough air to them ... ?? ... I ran pretty strong molasses ratios for awhile, no problems, but I had a recirculating system, with several in-line airstones ... maybe that let me get away with it ... glad to see them perking back up, regardless ... good save, Tree !:thumbsup: