Hi Jazzyblu. If your Aloes soil is always moist it could be rot. Succulents need to completely dry out between waterings, and to stay dry until showing signs of being thirsty is even better.

Do the leaves turn dark brown/black at the base. That's a sign of rot.

A few things can add to the risk of rot, one being the soil mix. It needs to be fast draining, so it can dry out quickly after watering.

Also needs decent size hole/s for fast drainage.

Let us know what the base of the leaves look like and what type of soil it's in.

We can't trouble shoot what we can't see. So w/out pix or info, on the kind of mix you use, the type of pot, where it is & how you care for it. How often you water? What part of the country are you in? Growing it indoors or out?

Sorry, but you've given us next to nothing to go on. Again, can't trouble shoot w/out seeing it.

Hello! Your pot needs to have holes in it, and you need to have a well mixed soil. I suggest a 50/50 cactus soil and perlite mix. Please make sure it's not getting too much water. If the soil is completely dry, give the Aloe a little water. If the soil is moist at all, don't water it. Test the soil 2-3 times a week by sticking a toothpick into the soil. If any of the soil sticks to the toothpick, and is wet, do not give it any more water. It would definitely help to identify what's wrong if you post a photo. Another thing you can do is acclimate. Maybe putting them immediately out into the full sun was a bad idea. Acclimate slowly, and you will eventually work your way up to full sun. Then, the Aloe will be more used to the sun.

Sorry Kylie, but a toothpick does little to test moisture in the soil; only tests the top couple of inches, which is not the issue. It's important to test the soil down below, among the roots & at the bottom of the pot.

So one needs something as long as the depth of the pot. Depending on size, a dowel or even a pencil. It's the unseen moisture way down below which contributes to root rot in bad soils or overwatered plants.

Thanks for the pix, don't know what to suggest for your humid climate. Hopefully others will chime in like the FLA folks w/ also have humidity to deal with.

Are the central leaves soft or mushy to your touch? Is the soil hard to your touch? How often are you watering?

MG cactus soil isn't recommended to be used alone for c/s plants, as mentioned above, at the very minimum it needs to be cut with at least 50% perlite for the easiest fast draining mix, more complicated recipes on here if you search in the box above using grits or gravel etc.