seedling means very small plant. there's probably a ppm for cal/mag but don't know what it is. you can give some now if you want. you probably want to web search for the amount or call the company and see what they say.
polishpollack Reviewed by polishpollack on . When to add cal/mag I can't find any info on when exactly to add it. The bottle says seedling, but that's too vague. The second set of leaves are just starting to show. Thanks for the help Rating: 5