Luke, I've got a P-Touch labelmaker made by Brother (Use Google to search for "P-touch"). It cost $20 at buy.com and the labels are like ... UV resistant, fade proof, they won't strangle the plant, the plant can grow for years without the label being broken. Look at the smaller plants in the last couple of pics and you'll see them. I stick them to themselves when I pot up the plant, around the base of the stem. All labels include the plant variety name in capital letters and the source in lowercase just after. Works like a champ!
Figs and mulberries are indeed related. Main difference is that the buds on a fig are more round, and mulberry is notably traingular. I had an experience early on trying to propagate an "unknown fig" which ended up being Morus Alba or Morus Rubra (I forget).
On the hours ... this is typical for indoor growing and I believe for hydroponics also. 18/6 or 16/8 is a typical cycle; if this were outside, the sun would be providing much more nutrient and fulfillment, so 16-18 hours would be overkill... under a grow rack with cheapo insignificant lights, increasing the hours I'm using aren't a problem. I've been growing all of my indoor winter plants and seedlings with this for years without problems....