Heres some more report from my trip.
Alexander Spring
First of all, its in the middle of nowhere,fl, otherwise known as Astor Park. Its a national park, so your state annual pass does not get you in, and I paid $5.35. They take your c-card, and give you a wristband, and you get the card back on the way out. On the upside, solo diving is allowed, or at least they didnt ask me if I had a buddy.
Once I pulled up to the spring, and scouted ahead, I realized the walk to the water was a long one. There is a place to offload canoes, which is still a walk from the parking lot, as you can see from the attached sattelite overhead. Its about a 200yrd walk. Bring a dolly if you have one.
So, after setting up, I walked down to the water and hopped in. Its pretty shallow over most of the basin, and only the spring are drops down to 30ft or so. There are several places where the water flows out, and one particular has a massive flow. I actually saw it blow up a 20pd rock. A diver caught in this upflow would be shot to the surface. There is also a short cavern in another area that goes back 20ft, then turns into at least a sidemount cave. But its fun to poke around in, and a diver can fit all the way in and turn around easily. After playing in the basin a bit, someone managed to cause a landslide into the main spring vent, causing a silt out of most of the deeper spring area. It was raining sand.
So, I swam around the basin looking for animals, and then headed home. In all, this is a nice 1/2 tank dive if youve never done it. Probably a great place to practice or teach also.