White Powdery Mildew

Parece que se tostó un poco esta planta ! haha

hey there ECS, to answer your question, yes seeds, water, even air can carry bacteria . To fix your plant , in coco, you need to feed and the velokelp will cause problems on its own : you need NPK calmag and one additive (like velokelp) , what happened is the velokelp raised the pH and combined with your low humidity , basically caused the plant to wilt. raise the rh to 65, cut out the kelp, feed cal mag and NPK, hopefully it might recover ! hope this helps ! 🚀