I have one plant that just sprouted a new leaf within the last month or so and I can already see a tiny new leaf coming out of the same plant again, and the other one isn't even complete yet. Is this normal? I've had this over a year and it's the first new leaf I've gotten. I suspect all the leaf and root growth is because I've started using liquid sea kelp when I water. The plant on the right is the one with the new leaf and the newer leaf...