re: Need tomato help! What's wrong with them?

Watering at dusk can have its own set of problems. Especially if you are watering daily, err nightly. If that's your only time to water I would definitely back off. When a a plant stays wet like that and cannot dry out before dark it can/will encourage mold growth and open the plant up to all sorts of fungus and rot.

This is especially true if you are sloppy with the hose and get the whole plant wet. Only water the roots and keep splashing to a minimum. Give me a picture of your whole plant if you can.

NOLAGT - If you raise 'maters in a container like 5 gallon buckets a pretty good rule of thumb is to add 1" of water quickly to the dirt. I'd say 32 oz cup or so would do. Let gravity and the power of the soil do the work and let it draw and soak that water as it pleases.

If you are watering until your bucket leaks all you are doing is flushing the nutrients, organisms, and fertilizers out of your growing medium. Do that often and you may as well grow in sand.

Watch your plants. They will tell you when they want a drink. I water when I see first signs of limb droop. Stress that plant a little and make it work.