I would say that there is not enough ventaliation at the crown of the plant. Also you did not say the color of your roots. If possible get a fan going so it circulates the air at the top of the buckets asap. The Hydroton is turning green cause the light is hitting nutrient rich water and causing algea to grow. Add 30ml H2O2 to kill what ever is growing on the 'ton and repeat 2 days later. That water hits the green stuff and goes into your res.
PlantHeadJ Reviewed by PlantHeadJ on . Check Out the Stalks on DWC My plan's are leaning the lower stems look funny. When I tilt the plant it feels like it broke loose from the peat pellet. That's one of the mediums the other is hydrotone. The roots are popping out the bottom of the Hydro Farm Buckets they were doing really well till I noticed this. Thanks in Advanced GL420 Rating: 5