I think they look good. I assume the Home Depot bucket has holes in the bottom? They seem overwatered (kept too wet, too long), maybe overfed.
What is the soil? What do you feed? How much? How often do you water or feed? The soil should be allowed to dry significantly. A common mistake new growers make is to water everyday like it's a houseplant. That causes problems. You want a good drench with 10% runoff, then wait for the soil to be very dry. (It's hard to quantify what that is. A common way to judge that is lifting the container and feeling how light it is. It should feel alarmingly/unnaturally light.).