Welcome to the flockI would not introduce chicks until you are sure they do not have coccidiosis that will spread quickly
If you are unsure they are getting the water you can try just a concentrated mixture directly in the beak. And if you do that don't double treat with the waterer just give them fresh water.
Good luck with your new additions sounds like a great group
There’s so many helpful, knowledgeable folks here and I’m sure you’ll find this site a very useful resource. I hope you enjoy it as much as we all do.
