Ok, so i have planted a marijuana seed that i germinated into some soil indoors. It grew a lot the at first but has now come to a very very slow growth rate. It is about three weeks old and has the two beginning round leaves and the two spikey leaves that are located a little higher up on the plants stem. I only water it when it gets dry so that's good. Could someone please tell me why it is growing soooooooooooo slow? Thank you.

