It's probably just the heat I would guess.
its been about the same temp here...maybe five degrees more or so and I just went out and watered my plants for the second time today....it seems in containers...they just dry up alot quicker when it gets above 90

If the buckets are light after watering your not watering enough. Those buckets should weigh close to 50 pounds after you water. Some time when dirt dries out and you water, the soil doesn't absorb it and it runs right down the edge of the pot and out the drain holes. Just keep watering until they are heavey.

I have been trying some advice from the Redwood City Seed Company webpage. It seems to be working for me. My experience has been that some peppers are more sensitive to the direct sun than others. Those are the ones that I have moved to partial sun. Here is an excerpt from their tips page:

"TRYING TO GROWING PEPPER PLANTS IN FLORIDA IN THE SUMMER? Formerly thought to be impossible, but can be successfully done, with these three changes.

1.) Always grow plants in the shade.

2.) Always feed once a month with bone meal. We use five pound for every 50 plants.

3.) May be best to grow in pots, rather than the ground, so you can move them around to find the best spot in the garden.

And the potting soil for the pots to grow peppers in the summer in Florida, should be a layer-cake, with 1/3 on the bottom a 50:50 mix of perlite Miracle Grow® Orchid Mix. Then for the 2/3rds top part, you make up a 50:50 mix of the Miracle Grow® Organic Choice and their Orchid Mix, with a cup of bone meal and a cup of blood meal mixed in thoroughly for each 12-inch diameter pot.

By using potting soil, making a well-drained mix, and keeping the plants in the shade, you should avoid all the problems of growing peppers in the summer in Florida."

I reduced the blood and bone meal to 1/2 cup in my pots. Good luck.

Here is a link that might be useful: Redwood City Seed Company

1/2 cup of each bone and blood per 12 inch pot? sounds like a lot of nitrogen, is that the only ferts you use?

on some of my plants when i water it just runs right out the bottom, i guess it is all root or soil is bad. Can i just repot these plats that are full grown or should i just leave them alone.

thanks for all the help
sam

I thought it sounded like a lot too so I only used 1/2 of what the Redwood City site recommends. The two peppers I used this soil mix for (habanero and gypsy) seem to be doing fine. They are also in 5 gal pots and I haven't used any other fertilizer with these two. I would check the amount of water as chillilover suggested. I would also forego the repotting and put the plants in a location with a little less direct sun and see how they do.