most likly it is a three gallon pot.
easy to over water and hard to dry out.
watering with a garden sprayer is best to distribute water over the top keeping the bottom mostly dry.
Most three gallon pots have 1 inch diameter holes on the bottom, about 5
I leave 24 hour light for veg. and mothers
Outside soil is real dense and takes a while to dry. I would mix it with 80% peat moss.
pine chips on the bottom of the pot are good for getting air in.
get air to the bottom especially if you packed in the dirt, you can make tunnels with your finger.