Can you get photos of the chicks at their level? From the side maybe?
Also, I have some concerns about your brooder.
1) Where is the heat?! Chicks NEED heat at that age unless your house is 95* day and night. Red heat lamps, reptile heat lamps, brooder plates all work great. Even a non LED light bulb can work well. That is a necessity.
2) Where is the bedding? Chicks that live on floors like that can develop splayed leg, which is a pain to treat. It will also get dirty and smelly really quick without bedding.
3) That brooder is much to small for those chicks, I don't like the holes, and its way to short. A chick could stick its heat through one and get stuck, or try to get out that way and get stuck. They are also going to outgrow that really quickly, and it will be hard to keep clean and smelling nice if they are in a brooder to small. Plus its to short, and those chicks are going to easier jump out of their which is a safety hazard. Not only to them, but to you. Not very sanitary to have chick poop all over your house.
4) Those are my only major concerns, but as a suggestion, you can raise that waterer with a brick or something similar to help keep it clean. Maybe you want to read my article about setting up a chick brooder to give you some ideas on how to improve your setup.
The Ultimate Guide to Setting Up a Chick Brooder
I hope my post is helpful and doesn't come across as frank.