That is a flood drain feeding the plant
goes off twice a day. Next time i do this i am going 50 50 coco perlite because i want it to get fed and dry out a bit more. They grow faster that way.
I love using them in veg...fill it up and forget about it for 2 weeks. Just check if it needs more water...put in peroxide every 3 days.
I am going to probably scrog her in that 32 special..I found scrog netting..and it split into 3 when i topped her...i love 3.
3 is my favorite prime number. It is a lucky number...She is going to be really something.