Keep it in a shady area with diffused light while the young leaves are tender.

What size container are you using, and what type of potting mix?

Josh

The leaves are looking great and I've got about 5 sprouts now. I'm not sure about the potting mix because it all came together in a growing kit, but I've just been leaving it on my patio and sometimes taking it inside because I recently got a grow light for it. The size of the container is just an 8oz plastic tub that had the seeds pre-planted in it, it says they should be transferred to the clay pot, that I was also given with the kit, once they have reached 2-3 inches in height. Would it be fine if I separated some sprouts into different pots and tried to grow multiple or is it best to keep them all together?

Don't separate them too soon. Wait until some of the leaves have hardened off.
Also, I'd be keeping the seedlings outdoors, not bringing them inside. If the night is very cold, put a cardboard box over them for the night, and move them close to a wall.

Josh

This is currently how they look, I've been keeping them outside for the most part. When it's cloudy and I'm home I bring them inside under my grow light. What do you mean by when some of the leaves have hardened off?

Hardened off means that the leaves are not tender, but have thickened cells so that wind, sun, and cold won't affect them as much. Part of the hardening process is exposing leaves to filtered sun, air-circulation, and temperature variation...which is why I'd keep them outdoors, even on cloudy days. That's actually perfect weather for hardening.

They're almost ready to be separated :-)

Josh

Awesome! And thank you, Josh, for all the help you have given me thus far. I will update in about a week or so.

-Ben

Here is how they look now, the big one is really starting to grow fast. Also, there are a few ants starting to burrow into the soil, should I worry about that?

Yes, saturate the mix to displace the ants. You might put out an ant-trap or ant bait, too.

Josh

A couple more leaves started showing, and I added a quarter to compare size. Is it almost time to transfer to another pot?

Almost time. Maybe another week or two.

After you do separate them, be sure to water the mix and put them in a shady area at first.

Josh

...you really want to be sure that they have an established root-system before messing with them. But don't worry about the roots entangling because maple roots will come apart easily with gentle handling.

Josh

Here's the latest in exciting bonsai growth!

Of the 3 potential trees that I've got, 2 have the same leaves but the shorter 1 has some very different leaves, is it maybe a different tree that got mixed in with the Japanese maples? Other than that, they seem to be doing well.

The small one looks like a Japanese maple...the larger ones almost look like Trident Maples, but only time will tell. The smallest is looking weak in the leaf, very pale. I hope it survives.

Josh

Should I transfer the big maple to a new pot so the smaller ones can get more sun?

And Moochinka, I can....but I won't. I apologize to the 4 people in the world that might read this thread.

I would really appreciate properly oriented images.

In fact, I don't usually respond to any Threads where pics aren't right-side up.

Josh

I actually don't know how...I just do it with my iphone. Ill try and figure something out