planted some ak-48 in in some jiffey potting soil, its all organic and everything. when i went to go fill the pots i noticed there is like some kind of flat black rock in the shit, it looks like shale or something. is this bad for the seedlings? planted them a day and a half ago so obviously they dident sprout yet but just wondering. like when you look at it closely you can see and pick it out, not sure if you guys know what i am talking about or not. i was kinda pissed and just am gonna kinda give up on the grow alreayd. i am doing it at a buddys house and he dident not want to go all they way across town to get some MG organic so i just said fuck it and settled with this shit. want anything done right you gotta do everything your self i guess. and i not not put any perlite in, is that a must?