Yes, there is drainage in both, the concrete one with the spider has three holes, and the larger plastic only has one... I have large rocks on the bottom of the concrete one, and have smaller gravel on the bottom or the larger one with the female in it.... you think I need to add a few more to the larger plastic one?
As for over feeding... I added about half the amount recommended on the directions, and watered about as much as I normally do... when it isnt raining I water once every other day or do... depending on how hot it is and how humid it is... The top of the soil is always dry... I havent dug up any soil to see if it is dry... think I should do that?