layer

Hey guys, I am growing some Northern Lights Auto and this is my first grow. They are about 20 days old. Growing under a 600w LED in fox farm soil at 20/4 light cycle. I noticed yesterday that there were some spots on the leaves that look like something ate the top layer of the leaf off. I...

I was wondering if anyone has used Hydroton as the top layer of plants that are in soil. Not mixed into the soil but just used as the top layer. Are there any negatives to using it. I don't have any issues I just like the way it looks and mainly just want it for decorative purposes. Would be an...