I'm running a top feed drip system in hydroton and am using the full line of Cutting Edge Solutions (Micro, Bloom, Grow, Plant Amp, Mag Amp,
Uncle John's Blend). The rockwool that my clones were started in is now covered with this grey slime or mold substance. I was wondering if anyone has experienced this, whether this is pathogenic or if it might just be nothing to worry about. Thanks for ...