Thanks for the tag @Shaggy
Welcome @Marie73 to the community and thus the forums, I have set your thread to watching so I can provide you with some assistance along the way.
Your off to a good start, and buying the pot for a pot was a good way to ensure your success early on.
@MattyBear knows a little bit more about the pot and the medium it’s self.
@Shaggy has a valid question we all would like to know and that’s why type of LED’s do you have?
Your going to need to buy some better lights I’m sorry to say, probably around the 300$ mark.
Those lights won’t last much longer before your plants out grow them, sorry for the bad news.
Can you link us directly to the lights amazon page, it’s okay to share amazon links but that’s about it.
Essential equipment is a quality PH pen (aphera or blue labs are the trusted ones) and any tds meter, both can be found in Amazon for a decent price.
You will also need PH up and PH down in order to dial in your water to the correct PH prior to diving your little girls a drink.
Be sure to leave your water out for 24hr to allow the chlorine to evaporate as well as it settle at room temperature.
Lots of details to get in so you will be successful, we will start asking you a bunch of questions and you will be asking us a bunch later 