That plant looks just fine dude. Nothing out of the ordinary there. Very healthy indica leaves. The weird looking undergrowth just looks like undeveloped leaves that arent getting much light to me. Nice job guy! Peace
I've read numerous places and do this myself, I flush with three times the volume of the pot...adding it in steps so as to be certain that the soil is completely saturated and run through. Nice cabinet and solid grow. Best of luck. Peace