your last pics are definitely showing signs of over watering. i would definitely do some more research and gain some true understanding before they get out of hand and become too much for you to handle.
Uhhhh Urine needs to be converted by nitrogen fixing bacteria and myco's before it is converted into a form usable by plants lol Well besides that all looks well for someone with little knowledge and no experience just goes to show it truly is a weed.
Everyone says I am overwatering, BUT...The plants do not like being watered every 3 or 4 days, they prefer every 2 or 3 days, even every other day, with the exception of one plant, which I think is being over watered because it wasn't draining.