Thanks everyone,
thaichillihead, It's a little early to tell but I think spartpots are a bit better than solid plastic containers. I can get by with less medium and it's very hard to over water.
franzb69, some will say it should be called a Calamondin instead. Seems like there's a lot of different spellings out there, but one things for sure; it's a versatile and delicious fruit. I may try to start some from seed next year.
Silver_Surfer and madhatter, thanks for letting me know. I've had the absolute worst luck with Datils and this is the farthest I've gotten. I'll have to try some new seed for next year. I've always wanted to try the true Datil, but hopefully this one is tasty anyway.